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PROCUREMENT OPPORTUNITY

Contract extension for provision of SOC/SIEM Managed Service

Thameslink Southern Great Northern Limited (TSGN) · Transparency notice on Find a Tender

Tender information last checkedLast checked 20 Sept 2026, 07:36.

Opportunity overview

Contract extension for provision of SOC/SIEM Managed Service. This is to extend the contract services for 20months, to align to our security licences which are in term until May 2028.

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.

Kroll Associates U.K. Limited

Matched by exact name
Published award value
£595.2k
Awarded
17 Sept 2026
Award ID
1
Status
pending
Identifier
GB-PPON PZZW-8975-XDWN
Location
London, UKI44, SE1 9SG, 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
PSC0629
Status
complete
Procurement Method
direct
Procurement Method Details
Direct award
Why this procedure was chosen
Under the Procurement Act 2023, under Schedule 5, item 7: Additional or Repeat Goods, Services or Works. The Direct Award is justified under item 7 on the basis that: · The requirement constitutes an extension to existing services currently provided by the incumbent supplier. A change of supplier would also mean a fundamental change to technology and integrations across the whole business which would create inconsistencies and incompatibility. Continuity of service is essential to maintain operational effectiveness and minimise risk to the organisation, a change would take significant time and resource.

Legal basis

Id
2023/54
Scheme
UKPGA

Special regime

utilities

Procedure reasons

Entry 1
Id
additionalRepeatExtensionPartialReplacement

Lots and requirements

Entry 1
Id
1
Status
complete

Published documents

Entry 1
Id
conflictOfInterest
Document Type
conflictOfInterest
Description
Not published

Buyer, suppliers and contacts

Organisation 1
Name
Thameslink Southern Great Northern Limited (TSGN)
Id
GB-PPON-PBTL-7556-PTRN

Identifier

Scheme
GB-PPON
Id
PBTL-7556-PTRN

Address

Street Address
24 Monument Street
Locality
London
Postal Code
EC3R 8AJ
Country
GB
Country Name
United Kingdom
Region
UKI31

Contact

Name
Kitty Sheeran
Telephone
000000000

Roles

buyer

Details

Classifications

Entry 1
Scheme
UK_CA_TYPE
Id
publicUndertaking
Description
Public undertaking
Organisation 2
Name
Kroll Associates U.K. Limited
Id
GB-PPON-PZZW-8975-XDWN

Identifier

Scheme
GB-PPON
Id
PZZW-8975-XDWN

Address

Street Address
The News Building, Level 6,, 3 London Bridge Street, England
Locality
London
Postal Code
SE1 9SG
Country
GB
Country Name
United Kingdom
Region
UKI44

Contact

Name
Stuart Morrison

Roles

supplier

Details

Scale
large
Vcse
No

Award information

Award 1
Id
1
Status
pending
Main Procurement Category
services
Above Threshold
Yes

Items

Item 1
Id
1
Related Lot
1

Additional Classifications

Entry 1
Scheme
CPV
Id
72600000
Description
Computer support and consultancy services

Delivery locations

Entry 1
Region
UKI31
Country
GB
Country Name
United Kingdom

Value

Including VAT
714,264
Amount
595,220
Currency
GBP

Suppliers

Supplier 1
Id
GB-PPON-PZZW-8975-XDWN
Name
Kroll Associates U.K. Limited

Contract period

Starts
1 Oct 2026, 00:00
Ends
31 May 2028, 23:59

Related lots

1

Documents

Entry 1
Id
088912-2026
Document Type
awardNotice
Notice Type
UK5
Description
Transparency notice on Find a Tender
Published
18 Sept 2026, 17:23
Format
text/html

Milestones

Entry 1
Id
1
Type
futureSignatureDate
Due
30 Sept 2026, 23:59
Status
scheduled

Recorded locations

  • Buyer location · London · UKI31 · EC3R 8AJ · United Kingdom

Notice and amendment history

2 published notice versions reviewed by ProcuraAxis.

2 VERSIONS
  1. 088912-2026Transparency notice on Find a Tender ·
  2. 088916-2026Contract award notice on Find a Tender ·