Competition with a shortlist
Competitive procedure with a selection stage: suppliers were shortlisted before being invited to bid.
Key facts
- Buyer
- National Energy System Operator Limited · Body governed by public law
- Suppliers
- Not named
- Value
- Not published
- Procedure
- Negotiated procedure with prior call for competition
- Sector
- Postal & telecoms services · Telecommunications services (CPV 64200000)
- Region
- South East
- Official notice
- 021577-2026 on Find a Tender
- Timeline
-
- Contract date4 Feb 2026
- Published10 Mar 2026Published 34 days after the contract date
Description
The procurement covers the end‑to‑end provision of a fully managed Microsoft Teams Direct Routing telephony service for the National Energy System Operator (NESO). The scope includes the design, deployment, migration and operation of a complete enterprise voice solution, including: hosted Session Border Controllers (SBCs) in Vodafone's cloud environment, PSTN connectivity, number management, analogue gateway replacement, site survivability via SBAs, supply and configuration of IP handsets and ATAs, service desk and 24/7 operations, monitoring, incident and problem management, service reporting, asset and configuration management, governance support, security and data‑protection compliance, and full exit management. Services include delivery of a structured implementation project, functional and non‑functional testing and acceptance, operational service management aligned to ITIL, monthly performance reporting, and compliance with NESO's security, data protection and subcontractor obli…