Home / Opportunities / Opportunity
PROCUREMENT OPPORTUNITY

3rd Line Support for the Maintenance of the London Overground WestCAD & SSI Interlocking

Transport for London · Transparency notice on Find a Tender

Tender information last checkedLast checked 30 Sept 2026, 00:36.

Opportunity overview

This is a single source for the Third line support and maintenance contract for the WestCAD signalling control and display system (SCDS) and the Solid-State Interlocking (SSI) which were developed by and installed by Siemens Mobility Limited for signalling control on the London Overground Core Windrush Line (formerly East London Line). The contract will end on the 31st July 2026. This contract undertakes 3rd line support should faults not be rectified locally across the line. Siemens provide a 24/7 diagnostic hotline, all operational spares, escalation of fault to expert if unable to resolve and the availability of system experts in hardware/software. This is estimated to cost during this period is £135,000 (excluding VAT).

Awarded to

Amounts belong to published awards or contracts. Where several suppliers share one value, it is labelled as shared and is not a supplier-specific allocation.

SIEMENS MOBILITY LIMITED

Matched by number
Published award value
£135k
Awarded
Not supplied
Award ID
1
Status
pending
Identifier
GB-COH 00016033
Location
London, UKI31, NW1 2PL, United Kingdom

Classification

No classification was supplied.

Lots

  • Lot 1Value not stated

Documents and notices

Published notice details

Additional information from the published procurement release. Fields appear only when supplied by the source; check the original notice and tender documents before acting.

Scope, procedure and submissions

Id
WS2371076555
Status
complete
Procurement Method
direct
Procurement Method Details
Below threshold - without competition

Legal basis

Id
2023/54
Scheme
UKPGA

Special regime

utilities

Lots and requirements

Entry 1
Id
1
Status
complete

Buyer, suppliers and contacts

Organisation 1
Id
GB-PPON-PHMT-6197-NWNZ
Name
Transport for London

Roles

buyer

Address

Region
UKI41
Country
GB
Locality
London
Postal Code
E20 1JN
Country Name
United Kingdom
Street Address
5 Endeavour Square

Details

Classifications

Entry 1
Id
publicAuthorityCentralGovernment
Scheme
UK_CA_TYPE
Description
Public authority - central government

Identifier

Id
PHMT-6197-NWNZ
Scheme
GB-PPON

Contact

Organisation 2
Id
GB-COH-00016033
Name
SIEMENS MOBILITY LIMITED

Roles

supplier

Address

Region
UKI31
Country
GB
Locality
London
Postal Code
NW1 2PL
Country Name
United Kingdom
Street Address
Sixth Floor, The Lantern, 75 Hampstead Road

Details

Vcse
No
Scale
large

Identifier

Id
00016033
Scheme
GB-COH

Contact

Additional Identifiers

Entry 1
Id
PLXP-3652-TTVN
Scheme
GB-PPON

Award information

Award 1
Id
1
Title
Third line Support by Siemens Mobility Limited for the Maintenance of the London Overground WestCAD & SSI Interlocking
Status
pending
Above Threshold
No
Main Procurement Category
services

Items

Item 1
Id
1
Related Lot
1

Delivery locations

Entry 1
Region
UKC
Country
GB
Country Name
United Kingdom
Entry 2
Region
UKD
Country
GB
Country Name
United Kingdom
Entry 3
Region
UKE
Country
GB
Country Name
United Kingdom
Entry 4
Region
UKF
Country
GB
Country Name
United Kingdom
Entry 5
Region
UKG
Country
GB
Country Name
United Kingdom
Entry 6
Region
UKH
Country
GB
Country Name
United Kingdom
Entry 7
Region
UKI
Country
GB
Country Name
United Kingdom
Entry 8
Region
UKJ
Country
GB
Country Name
United Kingdom
Entry 9
Region
UKK
Country
GB
Country Name
United Kingdom

Additional Classifications

Entry 1
Id
50000000
Scheme
CPV
Description
Repair and maintenance services

Value

Amount
135,000
Currency
GBP
Including VAT
162,000

Documents

Entry 1
Id
016771-2025
Format
text/html
Notice Type
UK5
Description
Transparency notice on Find a Tender
Document Type
awardNotice
Published
24 Apr 2025, 13:10

Suppliers

Supplier 1
Id
GB-COH-00016033
Name
SIEMENS MOBILITY LIMITED

Milestones

Entry 1
Id
1
Type
futureSignatureDate
Status
scheduled
Due
24 Apr 2025, 23:59

Related lots

1

Contract period

Ends
31 Jul 2026, 23:59
Starts
24 Apr 2025, 00:00

Recorded locations

  • Buyer location · London · UKI41 · E20 1JN · United Kingdom

Notice and amendment history

1 published notice version reviewed by ProcuraAxis.

1 VERSION
  1. ocds-h6vhtk-0506f8-2025-04-24T13:10:42+01:00Transparency notice on Find a Tender ·