Contract 1
Supplier
Contract value
Before modification:
- £339,328.57 excluding VAT
- £407,194.28 including VAT
After modification:
- £319,574.87 excluding VAT
- £383,489.84 including VAT
5.82% decrease
Below the relevant threshold
Contract modification date
12 November 2025
Effective date of the modification
13 November 2025
Contract dates
Before modification:
- 22 July 2025 to 27 June 2026
- Possible extension to 26 December 2026
- 1 year, 5 months, 5 days
After modification:
- 22 July 2025 to 13 May 2026
- Possible extension to 13 December 2026
- 1 year, 4 months, 23 days
2.49% decrease
Supplier
Northern Gas Networks Limited
100 Century Way Thorpe Park Business Park
Colton Leeds
LS15 8TU
United Kingdom
Region: UKE42 - Leeds
Small or medium-sized enterprise (SME): No
Voluntary, community or social enterprise (VCSE): No
Contract 1
Contracting authority
Stockton on Tees Borough Council
- Public Procurement Organisation Number: PCVQ-6435-GNMW
Dunedin House, Columbia Drive, Thornaby
Stockton on Tees
TS17 6BJ
United Kingdom
Region: UKC11 - Hartlepool and Stockton-on-Tees
Organisation type: Public authority - sub-central government