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)
Human resources services framework
Provision of human resources services including rewards and benefits, learning and development, health and wellbeing, personal and corporate insurance, background checks, visa serv
Security services and technology framework
Provision of security equipment and services
Building refurbishments and mechanical and electrical projects framework
Provision of building refurbishment services and Mechanical and Electrical Projects
Design and project services framework
Provision of capital works design and project management services.
Security information event and management software and professional services
Provision of security information event and management software Procurement of a tool used to continuously monitor information systems and networks for security events and anomalie
Financial audit services
National Energy System Operator (NESO) makes sure that Great Britain has the essential energy it needs by ensuring supply meets demand every second of every day. The UK's 2023 Ener