SONI090 – Client-Side Advisor
The contract covers the appointment of one Client-Side Advisor to support SONI Ltd, an electricity system operator operating in the energy sector, with its Corporate IT Separation Programme and the establishment of a Security Operations Centre. The supplier will provide programme management and leadership, technical assurance, test assurance, transition support and delivery oversight of the systems integrators and other suppliers responsible for the separation workstreams, working alongside SONI’s internal programme and technical teams and external advisers. The role excludes delivering, implementing or supplying the underlying systems, equipment or services procured through SONI’s separate competitions. The estimated contract value is £6.3 million, with the available information not specifying the contract duration or delivery timetable. Services will be delivered across the United Kingdom. The key stated requirement is appointment of a single supplier capable of acting as SONI’s primary client-side advisory partner and providing the required programme, technical, testing and transition assurance functions.
Buyer: SONI Ltd. Source: Find a Tender. Updated 19 Oct 2026.
Key facts
- Estimated value: £6.3m
- Bids close: 20 Nov 2026
- Location: Lisburn and Castlereagh
- Procedure: Competitive flexible procedure
- Contract period: 1 Feb 2027 to 31 Jan 2029
- Category: IT services: consulting, software development, Internet and support (72000000)
From the official notice
SONI is seeking to appoint one (1) supplier to act as Client-Side Advisor, providing programme management, technical assurance, test assurance and transition support to SONI in respect of the Corporate IT Separation Programme and the establishment of SONI’s Security Operations Centre, working alongside SONI’s internal programme and technical teams. This procurement is being conducted in accordance with the Procurement Act 2023 (the “Act”) and the Procurement Regulations 2024. The Client-Side Advisor augments SONI’s own programme and technical team, providing programme leadership, technical assurance and delivery oversight of the Systems Integrators (SIs) and suppliers delivering the separation workstreams. The role does not extend to the delivery, implementation or provision of any of the underlying systems, equipment or services being procured under SONI’s other separation competitions. The Tenderer awarded the Framework Agreement (the ‘Supplier’) will act as SONI’s primary partner for Client-Side Advisory services, working alongside SONI’s internal teams and its other external advisors.
View the official notice
Questions about this tender
When is the deadline?
Bids close on 20 Nov 2026.
What is it worth?
The estimated value is £6.3m.
Who can apply?
The buyer has marked it as suitable for small and medium-sized businesses.
How do I bid?
Open the official notice, register on the buyer's portal and submit your bid before the deadline.
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