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AWARD
Complete
2025-122 OFTO Cost Assessment Advisors
Published 2 Oct 2026
2 Oct 2026
- Primary CPV
-
66171000 *
Financial consultancy services
- Location
- 🇬🇧 Tower Hamlets, London
- Value
- £1,666,667
- Contract
-
4 years Duration
16/09/2026 09/09/2030
- Contract Types
-
66 *Financial & insurance servicesFull CPV Breakdown
- SME suitable
- Not stated
Publisher Address
10 South Colonnade, London, E14 4PU, United Kingdom · UKI42
Contact
Award Criteria
Not specified
Related tenders
Ofgem
All notices from this publisher Same CPV code
66171000 *
All notices with this CPV code
Reference: 2025-122
Ofgem is looking to procure the necessary Cost Assessment advisors for the Offshore Transmission Owners (OFTO) team to continue its regulatory duties. Provision of these services will be crucial and without this, Ofgem will be unable to run effective tender processes for the upcoming tender rounds.
Ofgem are required to run a tender exercise for all offshore transmission projects that qualify under the Tender Regulations 2015. Provision of Cost Assessment consultancy support services will be crucial to ensure that a robust tender process takes place for upcoming tender rounds and without this, Ofgem will be unable to run an effective tender process.
To facilitate a robust tender evaluation process, Ofgem requires the services of a supplier on various aspects of the tender and transaction process - evaluation of bidder submissions, and financial assessment required to bring the project to close/appoint an OFTO.
Ofgem are required to undertake a cost assessment review of the OFTO assets for those projects that will be the subject of the tender process.
This review is fundamental in determining the cost of building the transmission assets to ensure that those costs stated by the developer fairly reflect what will be transferred and that consumers are receive value for money. With this being the case, data submitted by the project developer must be carefully evaluated to ensure that assets are being transferred in the most economic and efficient manner possible.
Awarded to
Full CPV breakdown
- 66171000 — Financial consultancy services (primary)
Notice details
- Buyer type
- Local authority
- Competition
- Open competition (any supplier can bid)
- Contract type
- Services
- Winning supplier
- Large company
- Procurement method
- Open procedure
- Main category
- Services
- Legal basis
- UKPGA 2023/54
- Notice status
- Complete
- Award status
- Active
- Covered by GPA
- Yes
- Language
- EN
- Published
- 02 Oct 2026 10:29
- OCID
- ocds-h6vhtk-0689c7
- Notice ID
- 2025-122
Organisations on this notice
Grant Thornton UK Advisory & Tax LLP
Supplier Large
8 Finsbury Circus, London, EC2M 7EA, United Kingdom
GB-PPON PPLQ-5161-PCVN
Full notice record
55 detailsEverything the publisher included in this notice, organised by section.
Organisations
| Party 1 › Name | Ofgem |
| Party 1 › Address › Street | 10 South Colonnade |
| Party 1 › Address › Town / city | London |
| Party 1 › Address › Postcode | E14 4PU |
| Party 1 › Address › Country | GB |
| Party 1 › Address › Country | United Kingdom |
| Party 1 › Address › Region (NUTS) | UKI42 |
| Party 1 › Contact › Email | Procurement2@ofgem.gov.uk |
| Party 1 › Role | buyer |
| Party 1 › Link | http://www.ofgem.gov.uk |
| Party 1 › Classification › Description | Public authority - sub-central government |
| Party 2 › Name | Grant Thornton UK Advisory & Tax LLP |
| Party 2 › Address › Street | 8 Finsbury Circus |
| Party 2 › Address › Town / city | London |
| Party 2 › Address › Postcode | EC2M 7EA |
| Party 2 › Address › Country | GB |
| Party 2 › Address › Country | United Kingdom |
| Party 2 › Address › Region (NUTS) | UKI31 |
| Party 2 › Contact › Email | publicsector.bids@uk.gt.com |
| Party 2 › Role | supplier |
| Party 2 › Business size | large |
| Party 2 › VCSEs | No |
| Party 2 › Public service mission organisation | No |
| Party 2 › Sheltered workshop | No |
Buyer
| Name | Ofgem |
Tender
| Title | 2025-122 OFTO Cost Assessment Advisors |
| Status | complete |
| Procedure type | open |
| Procedure | Open procedure |
| Covered by | GPA |
| Lot › Status | complete |
| Document › Document type | Conflict of interest |
| Document › Description | Not published |
Awards
| Status | active |
| Category | services |
| Supplier › Name | Grant Thornton UK Advisory & Tax LLP |
| Item › CPV › CPV 1 › Description | Financial consultancy services |
| Item › CPV › CPV 2 › Description | Onshore and offshore services |
| Item › CPV › CPV 3 › Description | Financial management consultancy services |
| Item › Delivery › Region (NUTS) | UK |
| Item › Delivery › Country | GB |
| Item › Delivery › Country | United Kingdom |
Contracts
| Title | 2025-122 OFTO Cost Assessment Advisors |
| Status | active |
| Contract period › Start | 16 Sep 2026 |
| Contract period › End | 9 Sep 2030 |
| Value › Value incl. VAT | £2,000,000 |
| Value › Value | £1,666,667 |
| Value › Currency | GBP |
| Above threshold | Yes |
| Signed | 16 Sep 2026 |
| Document › Document type | Contract notice |
| Document › Description | Contract details notice on Find a Tender |
| Document › Link | https://www.find-tender.service.gov.uk/Notice/093175-2026 |
| Document › Published | 2 Oct 2026 |