Estimated Value
£8,900,000 – £16,500,000
Deadline
6 November 2025
Published
25 February 2026
Type
Not specified
Overview
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.
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.
Lots (2)
- Lot 1Energy 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)
- Lot 2GENERAL 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
Regulations cited
- Energy Act 2023
Additional details
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.
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.
AI AnalysisMembers
Requirements, key tasks and tips for reading this tender — included with Tendarix membership.
£4.99/month after a 7-day free trial. Cancel anytime before it ends and you pay nothing.
Award Details
SHAKESPEARE MARTINEAU LLP
£16,500,000
GOWLING WLG (UK) LLP
£16,500,000
DENTONS UK AND MIDDLE EAST LLP
£16,500,000
ADDLESHAW GODDARD LLP
£16,500,000
DLA PIPER UK LLP
£16,500,000
TLT LLP
£8,900,000
Likely incumbents
Suppliers who won similar work from this buyer in the last 5 years.
- 1
EFFICIO LIMITED
£8m
total awarded
- 2
Hewlett Packard Ltd t/a Hewlett Packard Enterprise
£2m
total awarded
- 3
PALANTIR TECHNOLOGIES UK, LTD.
£17m
total awarded
- 4
HORSEMAN COACHES LIMITED
£2m
total awarded
- 5
Unicorn Grid Systems a.s.
1 contract wonlatest 26 Aug 2026ends 7 Sept 2031£1m
total awarded
EFFICIO LIMITED is the most likely incumbent based on recency and category match. To win, bidders typically need a clearly differentiated proposition or a price advantage.
Before you bid, buyers check
two years of filed accountsyour financial standingturnover vs contract valueyour Companies House recordcash flow for 30-day termscredit scores and ratios
Actions
Start free trialto open noticeCreate an account and start a 7-day free trial to open the buyer’s own notice and tender documents, plus fit scoring and the Bid Writer. Then £4.99/month — cancel anytime.
Open Bid WriterIndependent software, web & cloud studio. We design, build and grow digital products that quietly outlast their category.
How to Apply
Step-by-step submission guide
Submission Portal
Find a Tender
Open the original notice
Click the button below to view the full notice on Find a Tender Service (FTS)
Check the procedure type
The "Procedure" section tells you if it's Open (one stage) or Restricted (SQ then ITT). This changes how you apply
Access the eSourcing portal
FTS notices link to the buyer's eSourcing platform — register there to access documents
Complete the Selection Questionnaire
Higher-value contracts often require an SQ first — this pre-qualifies you before the full bid stage
Submit electronically
Upload your completed response through the eSourcing platform before the closing date and time
FTS contracts are above UK procurement thresholds. Late submissions are strictly rejected — submit at least 24 hours before the deadline to avoid portal issues.
Buyer Profile
NATIONAL ENERGY SYSTEM OPERATOR LIMITEDKey Dates
Published
25 February 2026
Submission deadline
6 November 2025
Notice type
award
Source
find a tender
Related Tenders
Extra care housing development - edinburgh house
NB: The Councils' high level requirements are summarised below with further important details included within the Procurement Documents accessible via https://supplier.in-tend.co.u
Carbine backup sights
The CNC requires Backup Iron Sights (BUS) to provide a reliable secondary sighting capability for its GR115 carbines. The BUS will be used alongside the CNC’s chosen primary sighti
Office facilities, HVAC & building services management for lifestone homes
Lifestone Homes Limited wishes to appoint an experienced M&E contractor to undertake varied statutory services of the group and its subsidiaries. The intention is to commence April
Grounds and hedges maintenance
Cut hedges located at the Recreation ground perimeter including PROW, carpark. Cut hedges by bus shelter. Gang Mowing Halstead Recreation Fertilise recreation field Weed treatment
