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Thameslink Southern Great Northern Limited (TSGN): Contract extension for provision of SOC/SIEM Managed Service

  Thameslink Southern Great Northern Limited (TSGN) has published this notice through Delta eSourcing

Notice Summary
Title: Contract extension for provision of SOC/SIEM Managed Service
Notice type: UK6: Contract award notice
Authority: Thameslink Southern Great Northern Limited (TSGN)
Nature of contract: Not applicable
Procedure: Direct award
Short Description: 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.
Published: 18/09/2026 17:26
UK6: Contract award notice Published 18/09/2026

Contract extension for provision of SOC/SIEM Managed Service


Contracting Authorities




Contracting authority:

Thameslink Southern Great Northern Limited (TSGN)


Public Procurement Organisation Number:

PBTL-7556-PTRN


Address:


24 Monument Street
London
EC3R 8AJ
UK


Contact name:

Kitty Sheeran


Email:

kitty.sheeran@gtrailway.com


Telephone:

000000000


Website:

Not provided


Organisation type:

BODY_PUBLIC


Devolved regulations that apply:

None




Procedure



Procedure type:


Direct award










Special regime:


Utilities



Scope



Title:

Contract extension for provision of SOC/SIEM Managed Service


Reference number:

PSC0629



Description:

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.









Contract value:

Not provided



Contract Details



Contract 1


Title:

Not provided


Reference number:

Not provided


Contract value:

GBP 714,264 including VAT


Below the relevant threshold:

No


Award decision date:

18/09/2026


Earliest date the contract will be signed:

30/09/2026


Contract dates (estimated):

01/10/2026 to 31/05/2028


Main procurement category:

SERVICES


CPV classifications:


72600000 - Computer support and consultancy services.



Delivery regions:


UKI31 - Camden and City of London





Supplier




Supplier:

Kroll Associates U.K. Limited


Companies House:

PZZW-8975-XDWN


Address:


The News Building, Level 6,, 3 London Bridge Street, England
London
SE1 9SG
UK


Email:

stuart.morrison@kroll.com


Telephone:

Not provided


Small or medium-sized enterprise (SME):

No


Voluntary, community or social enterprise (VCSE):

No


Supported employment provider:

No


Public service mutual:

No





Other organisations


Not provided