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Awarded contract
Published 14 Aug 2026

BT MGST - Private Circuit Emergency Overrun Service (PCEOS) Extension

Transport for London · London

Key facts

Contract value
£450,672
Contract starts
13 Aug 2026
Contract ends
30 Nov 2026
Procedure
Direct award
Buyer type
Utilities & transport

Awarded to

SupplierValue
BRITISH TELECOMMUNICATIONS LIMITED£450,672

Description

The contract is for the continued provision of BT's Private Circuit Emergency Overrun Service (PCEOS) supporting the London Overground GSM-R (Global System for Mobile Communications - Railway) network. The service maintains safety-critical telecommunications links used for communications between train drivers, signallers and railway operational control functions. The contract is required to ensure continuity of GSM-R services while Rail for London completes the migration from BT's legacy Megastream platform to a replacement Nokia-based transmission solution. BT is the only supplier capable of providing the service due to its ownership and operation of the Megastream infrastructure.

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