Buyer profile
NATIONAL ENERGY SYSTEM OPERATOR LIMITED
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Total contracts
46
Known spend
£454m
25 disclosed
Average value
£18m
Per contract
Active suppliers
10
Last 5 years
Top suppliers
Last 5 years- 1
Efficio Limited
£8m
- 2
GOWLING WLG (UK) LLP
£18m
- 3
DLA PIPER UK LLP
£17m
- 4
TLT LLP
£11m
- 5
PALANTIR TECHNOLOGIES UK, LTD.
£17m
- 6
SHAKESPEARE MARTINEAU LLP
£17m
- 7
DENTONS UK AND MIDDLE EAST LLP
£17m
- 8
ADDLESHAW GODDARD LLP
£17m
- 9
SOFTCAT PLC
1 winlatest 01 Aug 2026£14m
- 10
SALESFORCE UK LIMITED
£4m
What they buy
By CPV categoryIT servicesCPV 72
5 contracts · £3m
Business servicesCPV 79
4 contracts · £10m
SoftwareCPV 48
2 contracts · £12m
Companies House
NATIONAL ENERGY SYSTEM OPERATOR LIMITED · 11014226active
Incorporated
Oct 2017
Last accounts filed
Mar 2025
Next accounts due
Dec 2026
Active officers
14
Active officers
- FAVIER-TILSTON, Clairesecretary
- MORRISSEY, Zoe Elisesecretary
- CRACKETT, Johndirector
- DUFFY, Clare Siobhandirector
- FITZGERALD, Emma, Drdirector
- GOLBY, Paul, Drdirector
- LEGGE, Kayte Anne Evedirector
- LINWOOD, John Frederickdirector
SIC codes
Tender activity
Notices published per month — last 24 months
All contracts (46)
NESO workplace fit-out, refurbishment and associated works (midlands)
The procurement relates to office fit-out and refurbishment works across NESO estate locations within the UK. NESO currently intends to competitively procure the works via one of t
DD&T value added reseller (VAR)
Establishment of a VAR to support procurement of low-complexity technology goods and services
Energy market modelling software and compute services
Provision of modelling software licences and compute capacity for energy market simulations
CRM platform
Enterprise CRM platform licensing and associated services for customer relationship management
Financial audit services
Financial Audit Services - annual audit services
Cyber security operations centre (SOC) and SIEM services
Managed SOC and SIEM services for continuous monitoring, threat detection, and response
Pan-european energy market modelling and advisory services
Provision of market modelling software and advisory services supporting European energy market analysis
Electricity network management system (IEMS) software subscription
Subscription for Integrated Electricity Management System software supporting network operations and optimisation
Lead provider for strategic energy planning (SEP)
The National Energy System Operator ("NESO") conducted a mini-competition under the NESO Legal Framework Agreement to appoint a lead provider to support NESO's Strategic Energy Pla
NESO travel management services
NESO is seeking a single supplier to provide a range of travel services under one solution - Travel Management System (TMS). These services can broadly be broken down as follows: A
Legal services framework
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 a
Operator console
Design, Implementation and Support of the Operator Console solution as per the below: • Provision of a detailed solution design including the following components: • Operator Conso
Occupational health & employee assistance programme services
The National Energy System Operator (NESO) is an independent, public corporation at the centre of the energy system with a view to create access to reliable, clean and affordable e
Flexible benefits platform (including brokering service) and employee reward & recognition platform
The National Energy System Operator (NESO) is an independent, public corporation at the centre of the energy system with a view to create access to reliable, clean and affordable e
Digital and data capabilities framework
The tender was completed under the new NESO entity with Public procurement organisation number (PPON) PHQL-5234-MWWV National Grid Electricity System Operator Limited (NGESO), a le
Management consultancy services
Provision of management consultancy services including Business/Admin, Project Management, Financial Services, HR Consultancy, IT Consultancy, Procurement Consultancy, etc.
IT procurement services (digital data &technology) DD&T
This contract covers IT Procurement Services (Digital Data &Technology) Procurement Operations: DD&T inherited a large portfolio of TSA contract from National Grid that are to be t
Procurement services operational/indirects
This contract covers interim procurement services provision for operational procurement services (P2P) and Indirects procurement services - a single team. Operational Procurement (
Procurement services indirect & IT
Procurement Services Solution in conjunction with NESO covering: Operational Sourcing, Indirects and IT (DD&T)
Subscription services framework
Provision of utilities and energy research and development data subscription services.