01 Procurement
Tender overview
- Buyer
- NATIONAL ENERGY SYSTEM OPERATOR LIMITED
- Status
- Complete
- Procurement method
- Competitive flexible procedure
- Category
- services
- CPV classification
- Not supplied
- Tender period
- Not supplied — 6 November 2025
Description
National Energy System Operator (NESO) is awarding a framework agreement under competitive flexible procedure across a full range of legal services to support NESO's requirements and activities. Suppliers will partner with the internal NESO Legal team to provide high quality advice and support NESO to meet its objectives. The framework agreement is split into 2 Lots and amounts to £30.5m (including VAT): LOT 1 - Energy Regulation & Frameworks Advising on all aspects of the United Kingdom (UK) and, where relevant, European Union (EU) regulatory regimes and frameworks for gas and electricity, including sector-specific European legislation and rules (where relevant) and Great Britain (GB) primary and secondary legislation that impacts on or are relevant to the business activities of NESO (licensed and unlicensed). This includes: 1. Advising on the specific rules applicable to NESO, as well as on the regimes applicable to other sector participants including transmission networks, distribution networks, interconnectors, generators, storage and suppliers as are or may be relevant to NESO's activities. 2. Advising on matters relating to the interaction of the UK and EU regulatory regimes with the gas and electricity arrangements, including relationships with European institutions such as ENTSO-E and ENTSOG. 3. Advising on any innovation matters that arise as the gas and electricity markets and regulatory regimes develop. 4. Advising on all matters relating to the compliance with the UK and EU regulatory regimes for electricity and gas and how they impact on all the activities of NESO in Great Britain, including the impact on contractual arrangements NESO has with third parties. 5. Advising on the specific legal framework applicable to NESO as the designated independent system operator and planner under the Energy Act 2023 including: 5.1 Advising on the application of NESO's general statutory duties to its activities, including its duty to have regard to the Strategy and Policy Statement. 5.2 Advising NESO on the use of its power to request information. 5.3 Advising on NESO's independence requirements and requirements relating to conflict of interest. 6. Advising on the sector specific commercial arrangements relevant to NESO's energy activities, as set out in further detail below. More specific areas within Lot 1 are detailed below - no subcontracting is allowed cross Lot 1 disciplines: 1 Electricity/ gas codes 2 Electricity connections 3 Balancing services (electricity) 4 Electricity interconnectors 5 Electricity Market Reform 6 Network competition 7 Gas markets 8 Developing/adapting to new energy legal frameworks 9 Licence change, investigations and other regulatory issues 10 Public Investigation and inquiry processes 11 Planning and major infrastructure projects 12 Information management (energy) 13 Public Law (energy) 14 Competition law and dawn raids (energy) 15 Litigation (energy) The requirements for advice and support set out in this Lot 1 relate to both non-contentious and contentious matters unless expressly stated otherwise. LOT 2 - GENERAL SERVICES This lot includes advising NESO on all corporate and commercial aspects of its operations to support its organisational functions, taking into account NESO's status as a public corporation. More specific areas within Lot 1 are detailed below -subcontracting permitted only for specific Lot 2 disciplines (Trademark & Patent Services, Pensions, and Insurance): 1 General commercial and transactions 2 Public procurement 3 Technology expertise (including Cyber Security, AI, ICT & IoT) 4 Innovation 5 Commercial property/ construction 6 Corporate 7 Finance 8 Intellectual Property (including trademark and patent services) 9 Health, safety and environmental 10 Employment 11 Pensions 12 Insurance (including insurance claims) 13 Information Management (non-energy) 14 Public Law (non-energy) 15 Competition law & dawn raids (non-energy) 16 Litigation (non-energy) The requirements for advice and support set out in this Lot 2 relate to both non-contentious and contentious matters unless expressly stated otherwise. Individual workpackages will be awarded to suppliers based on the call-off mechanism detailed in the framework agreement.
This page represents one OCDS contracting process. Notices can be revised over time. Values may be estimates, award values or contract values and should be read with their displayed stage and date.
02 Awards and contracts
Published award records
LOT 1 - Energy Regulation & Frameworks
- Awarded
- 15 January 2026
- Award value
- £16,500,000
- Suppliers
- 5
- Signed contract
- 30 January 2026
Lot 2 - General Legal Services
- Awarded
- 15 January 2026
- Award value
- £8,900,000
- Suppliers
- 4
- Signed contract
- 30 January 2026
03 Organisations
Buyers, suppliers and other parties
NATIONAL ENERGY SYSTEM OPERATOR LIMITED
St Catherine's Lodge Bearwood Road, Wokingham, UKJ11, RG41 5BN, United Kingdom
Companies House 11014226 →ADDLESHAW GODDARD LLP
41 Lothbury, London, UKI31, EC2R 7HG, United Kingdom
Companies House OC318149 →BIRD & BIRD LLP
12 New Fetter Lane, London, UKI31, EC4A 1JP, United Kingdom
Companies House OC340318 →BRODIES LLP
Capital Square, Edinburgh, UKM75, EH3 8BP, United Kingdom
Companies House SO300334 →BRYAN CAVE LEIGHTON PAISNER LLP
Governor's House, London, UKI31, EC4R 0BR, United Kingdom
Companies House OC315919 →DENTONS UK AND MIDDLE EAST LLP
One Fleet Place, London, UKI43, EC4M 7WS, United Kingdom
Companies House OC322045 →DLA PIPER UK LLP
160 Aldersgate Street, London, UKI31, EC1A 4HT, United Kingdom
Companies House OC307847 →DWF LLP
1 Scott Place, Manchester, UKD33, M3 3AA, United Kingdom
Companies House OC328794 →GOWLING WLG (UK) LLP
4 More London Riverside, London, UKI44, SE1 2AU, United Kingdom
Companies House OC304378 →HERBERT SMITH FREEHILLS KRAMER LLP
Exchange House, Primrose Street, London, UKI31, EC2A 2EG, United Kingdom
Companies House OC310989 →HOGAN LOVELLS INTERNATIONAL LLP
Atlantic House, London, UKI31, EC1A 2FG, United Kingdom
Companies House OC323639 →NORTON ROSE FULBRIGHT LLP
3 More London Riverside, London, UKI44, SE1 2AQ, United Kingdom
Companies House OC328697 →SHAKESPEARE MARTINEAU LLP
No 1 Colmore Square, Birmingham, UKG31, B4 6AA, United Kingdom
Companies House OC319029 →TLT LLP
One Redcliff Street, Bristol, UKK11, BS1 6TP, United Kingdom
Companies House OC308658 →WOMBLE BOND DICKINSON (UK) LLP
4 More London Riverside, London, UKI44, SE1 1AU, United Kingdom
Companies House OC317661 →Companies House links appear only for explicit GB-COH identifiers. BritDB does not create company links from a similar name or address.
04 Provenance
Source for this process
Contains public sector information licensed under the Open Government Licence v3.0. Official external links are available only on the source transition page.