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The project is in its commercialisation (pre-procurement) phase, with grant funding secured for this stage. Karbon is supported by HNDC as commercialisation and technical adviser.\nThe opportunity\nKarbon intends, in due course, to appoint a delivery partner, anticipated to be an Energy Services Company (ESCo), to transition heat generation from the existing gas-fired plant to a low-carbon solution. The solution is currently developed around large-scale water-source (river) heat pumps with thermal storage. The commercial and procurement structure is still being finalised, and this engagement will help inform it. This notice does not commence a procurement or call for competition.\nScope of the soft market testing\nWe welcome responses from organisations with capability across the design, build, financing and operation of district heat networks, including potential ESCo partners, EPC / DBOM contractors, and specialist sub-contractors. A Soft Market Testing Questionnaire is available on request and invites views on:\n* relevant experience and capability in comparable schemes;\n* appetite for delivery in a live, occupied, heritage-listed residential environment;\n* appropriate commercial and contracting structures, and parent company guarantee / security positions. How to register interest\nTo take part, or to receive the Questionnaire, please register with our e-Sourcing Portal https://app.panacea-software.com/KarbonHomes/\nShould you require technical support with the e-Sourcing portal please email them directly at:\n* Email: support@panacea-software.com\n* Phone: 0207 976 0116\nSubmissions must be via the above e-Sourcing portal. 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Any negotiation will be based on the agreement included in the tender pack, and the Authority reservice the right to engage with the next ranked supplier from stage two should any discussion become protracted or in the opinion of the Authority be unlikely to result an agreed contract." }, "coveredBy": [ "GPA" ], "submissionMethodDetails": "https://app.panacea-software.com/KarbonHomes/eRFX-Suppliers/OpenReq.aspx?requirementId=ec95238b-bb91-42f1-98f2-c48da1a04291", "submissionTerms": { "electronicSubmissionPolicy": "allowed", "languages": [ "en" ] }, "tenderPeriod": { "endDate": "2026-11-20T12:00:00Z" }, "enquiryPeriod": { "endDate": "2026-11-11T17:00:00Z" }, "awardPeriod": { "endDate": "2026-12-11T23:59:59Z" }, "documents": [ { "id": "conflictOfInterest", "documentType": "conflictOfInterest", "description": "Not published" }, { "id": "098720-2026", "documentType": "tenderNotice", "noticeType": "UK4", "description": "Tender notice on Find a Tender", "url": "https://www.find-tender.service.gov.uk/Notice/098720-2026", "datePublished": "2026-10-19T20:10:56+01:00", "format": "text/html" } ] }, "language": "en", "extensions": [ "https://standard.open-contracting.org/profiles/eu/latest/en/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_amendment_rationale_classifications_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_budget_breakdown_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_contract_completion_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_documentation_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_pagination_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_performance_failures_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_suitability_extension/master/extension.json", "https://raw.githubusercontent.com/portaledcahn/ocds_Links_extension/main/extension.json", "https://raw.githubusercontent.com/cabinetoffice/ocds_uk_extension/main/extension.json" ] }, "versionedRelease": { "ocid": "ocds-h6vhtk-06bd8c", "initiationType": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "tender" } ], "parties": [ { "id": "GB-PPON-PCDL-6326-LXPW", "name": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Karbon Homes" } ], "identifier": { "scheme": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "GB-PPON" } ], "id": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "PCDL-6326-LXPW" } ] }, "address": { "streetAddress": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "5 Gosforth Park, Gosforth Business Park" } ], "locality": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Newcastle upon Tyne" } ], "postalCode": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "NE12 8EG" } ], "country": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "GB" } ], "countryName": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "United Kingdom" } ], "region": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "UKC22" } ] }, "contactPoint": { "name": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Chris Smith" } ], "email": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "chris.smith@karbonhomes.co.uk" } ] }, "roles": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": [ "buyer" ] } ], "details": { "url": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "https://www.karbonhomes.co.uk/" } ], "classifications": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": [ { "scheme": "UK_CA_TYPE", "id": "publicUndertaking", "description": "Public undertaking" } ] }, { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": [ { "scheme": "UK_CA_TYPE", "id": "publicAuthoritySubCentralGovernment", "description": "Public authority - sub-central government" } ] } ] } }, { "id": "GB-COH-15709646", "name": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "HNDC" } ], "identifier": { "scheme": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "GB-COH" } ], "id": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "15709646" } ] }, "address": { "streetAddress": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Printing House, 66 Lower Road" } ], "locality": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Harrow" } ], "postalCode": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "HA2 0DH" } ], "country": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "GB" } ], "countryName": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "United Kingdom" } ], "region": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "UKI74" } ] }, "contactPoint": { "name": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Paul McIver" } ], "email": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "paul@hndc.co.uk" } ] }, "roles": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": [ "procuringEntity" ] } ], "roleDetails": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "ITT preparation and evaluation support." } ] } ], "buyer": { "id": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "GB-PPON-PCDL-6326-LXPW" } ], "name": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Karbon Homes" } ] }, "planning": { "milestones": [ { "id": "engagement", "type": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "engagement" } ], "description": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Indicative Timeframes\nThe following indicative timeframes are set out to inform respondents. They are subject to refinement based on SMT feedback and GHNF funding conditions.\n1.\tIssue of SMT and prospectus: July 2026\n2.\tSMT response deadline: 17th July 2026\n3.\tMarket engagement sessions (1:1 / group): August 2026\n4.\tPublication of refined opportunity shape / procurement strategy: August 2026\n5.\tProcurement launch: August – September 2026\n6.\tPreferred partner identified: September 2026\n7.\tContract award / financial close: March 2027\n8.\tConstruction commencement: April 2027\n9.\tGHNF construction spend-by deadline: Financial Year End 2028\n10.\tScheme in service / operational handover: 2028 Onward" } ], "dueDate": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "2026-09-30T23:59:59+01:00" } ], "status": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "scheduled" } ] } ], "documents": [ { "id": "060054-2026", "documentType": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "marketEngagementNotice" } ], "noticeType": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "UK2" } ], "description": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Preliminary market engagement notice on Find a Tender" } ], "url": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "https://www.find-tender.service.gov.uk/Notice/060054-2026" } ], "datePublished": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "2026-06-25T18:28:01+01:00" } ], "format": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "text/html" } ] } ] }, "tender": { "id": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "202606-GS32" }, { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "202606 - GS32" } ], "legalBasis": { "id": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "2023/54" } ], "scheme": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "UKPGA" } ], "uri": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "https://www.legislation.gov.uk/ukpga/2023/54/contents" } ] }, "title": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Byker District Heat Network Decarbonation" }, { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Byker District Heat Network" } ], "description": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "Project overview\nKarbon Homes is progressing the decarbonisation of the Byker District Heat Network in Newcastle upon Tyne, a Grade II* listed social housing estate of around 80 hectares, with more than 2,000 connected homes served by the Walker Road Energy Centre and twelve substations. The project is in its commercialisation (pre-procurement) phase, with grant funding secured for this stage. Karbon is supported by HNDC as commercialisation and technical adviser.\nThe opportunity\nKarbon intends, in due course, to appoint a delivery partner, anticipated to be an Energy Services Company (ESCo), to transition heat generation from the existing gas-fired plant to a low-carbon solution. The solution is currently developed around large-scale water-source (river) heat pumps with thermal storage. The commercial and procurement structure is still being finalised, and this engagement will help inform it. This notice does not commence a procurement or call for competition.\nScope of the soft market testing\nWe welcome responses from organisations with capability across the design, build, financing and operation of district heat networks, including potential ESCo partners, EPC / DBOM contractors, and specialist sub-contractors. A Soft Market Testing Questionnaire is available on request and invites views on:\n* relevant experience and capability in comparable schemes;\n* appetite for delivery in a live, occupied, heritage-listed residential environment;\n* appropriate commercial and contracting structures, and parent company guarantee / security positions. How to register interest\nTo take part, or to receive the Questionnaire, please register with our e-Sourcing Portal https://app.panacea-software.com/KarbonHomes/\nShould you require technical support with the e-Sourcing portal please email them directly at:\n* Email: support@panacea-software.com\n* Phone: 0207 976 0116\nSubmissions must be via the above e-Sourcing portal. Submitted via postal, or email methods will not be accepted." }, { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Karbon Homes invites tenders for the design, build, finance, operation and maintenance of the decarbonised Byker District Heat Network in Newcastle upon Tyne. The Byker estate is Grade II* listed, covers around 80 hectares and is live and occupied throughout. There are 1,985 connections, being 1,815 Karbon Homes connections and 170 freeholder and non-domestic connections presently supplied by Newcastle City Council, of which 1,978 are residential and 7 are non residential. The network is served by the Walker Road energy centre and twelve substations.\nA preliminary market engagement notice for this procurement, reference 2026/S 000-060054, was published on 25 June 2026. The description of the scheme in that notice has been superseded and tenderers should refer to the information contained within this tender pack.\nAll documents relating to this tender are available to download from the Panacea e-Sourcing portal.\nSubmission Instructions:\nElectronically via the e-Sourcing portal. Suppliers must submit one copy of their tender electronically, with any additional documents required or requested. Documents must be compatible with Microsoft Office or Adobe/PDF.\nShould you require technical support with the e-Sourcing portal please email them directly at:\n•\tEmail: support@panacea-software.com\n•\tPhone: 0207 976 0116\nTenders must be submitted using the above e-Sourcing portal. 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"criteria": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": [ { "type": "quality", "name": "Development to contract close, consents and heritage", "numbers": [ { "number": 8, "weight": "percentageExact" } ] }, { "type": "quality", "name": "Delivery in a live, occupied, listed estate", "numbers": [ { "number": 12, "weight": "percentageExact" } ] }, { "type": "quality", "name": "Generation, storage, network and capacity for growth", "numbers": [ { "number": 12, "weight": "percentageExact" } ] }, { "type": "quality", "name": "Operation, maintenance, lifecycle and handback", "numbers": [ { "number": 10, "weight": "percentageExact" } ] }, { "type": "quality", "name": "Customers, vulnerability and regulatory compliance", "numbers": [ { "number": 8, "weight": "percentageExact" } ] }, { "type": "quality", "name": "Social Value", "numbers": [ { "number": 10, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F1 Hurdle equity internal rate of return", "numbers": [ { "number": 4, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F2 Financial model", "numbers": [ { "number": 6, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F3 Tariff and landlord contribution", "numbers": [ { "number": 16, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F4 Pre-construction services contribution", "numbers": [ { "number": 5, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F5 Delivery stage funding", "numbers": [ { "number": 5, "weight": "percentageExact" } ] }, { "type": "cost", "name": "F6 Grant drawdown and defrayal", "numbers": [ { "number": 4, "weight": "percentageExact" } ] } ] } ] } } ], "status": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "planning" }, { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "active" } ], "procurementMethod": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "open" } ], "procurementMethodDetails": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Competitive flexible procedure" } ], "procedure": { "features": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Stage one RFX Questionnaire will be evaluated on a pass/fail basis and in accordance with the information detailed within the ITT. In instances where a submission is rejected at this point, the Supplier will automatically be disqualified and will not progress to the next stage.\nSubmissions which have met the minimum standards will be shortlisted and stage two and submissions will be evaluated in accordance with the evaluation assessment process as described below and as set out in the award criteria, within the ITT.\nSubmissions will be ranked as part of assessment at stage two, only the highest ranked supplier will progress onto stage three. Subject to Board approval the Authorities intension is to enter into a PCSA agreement with the highest ranked supplier, whilst negotiating the final terms of the concession agreement. Any negotiation will be based on the agreement included in the tender pack, and the Authority reservice the right to engage with the next ranked supplier from stage two should any discussion become protracted or in the opinion of the Authority be unlikely to result an agreed contract." } ] }, "coveredBy": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": [ "GPA" ] } ], "submissionMethodDetails": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "https://app.panacea-software.com/KarbonHomes/eRFX-Suppliers/OpenReq.aspx?requirementId=ec95238b-bb91-42f1-98f2-c48da1a04291" } ], "submissionTerms": { "electronicSubmissionPolicy": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "allowed" } ], "languages": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": [ "en" ] } ] }, "tenderPeriod": { "endDate": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "2026-11-20T12:00:00Z" } ] }, "enquiryPeriod": { "endDate": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "2026-11-11T17:00:00Z" } ] }, "awardPeriod": { "endDate": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "2026-12-11T23:59:59Z" } ] }, "documents": [ { "id": "conflictOfInterest", "documentType": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "conflictOfInterest" } ], "description": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Not published" } ] }, { "id": "098720-2026", "documentType": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "tenderNotice" } ], "noticeType": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "UK4" } ], "description": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "Tender notice on Find a Tender" } ], "url": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "https://www.find-tender.service.gov.uk/Notice/098720-2026" } ], "datePublished": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "2026-10-19T20:10:56+01:00" } ], "format": [ { "releaseID": "098720-2026", "releaseDate": "2026-10-19T20:10:56+01:00", "releaseTag": [ "tender" ], "value": "text/html" } ] } ] }, "language": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": "en" } ], "extensions": [ { "releaseID": "060054-2026", "releaseDate": "2026-06-25T18:28:01+01:00", "releaseTag": [ "planning" ], "value": [ "https://standard.open-contracting.org/profiles/eu/latest/en/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_amendment_rationale_classifications_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_budget_breakdown_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_contract_completion_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_documentation_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_pagination_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_performance_failures_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_suitability_extension/master/extension.json", "https://raw.githubusercontent.com/portaledcahn/ocds_Links_extension/main/extension.json", "https://raw.githubusercontent.com/cabinetoffice/ocds_uk_extension/main/extension.json" ] } ] } } ] }