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NorTMS External Audit Services

Transport for the North

Confirmed tender
services

Key details

Contracting authority
Transport for the North
Public authority - sub-central government
Region
Manchester
Delivery: North East England, United Kingdom
Contract value
£300,000ex VAT
£360,000 inc VAT
Deadline
19 June 2026
Published
22 May 2026

Procurement

Contract period
1 April 2027 - 31 March 2028
11 months
Possible extension to 1 April 2030 · 3 years in total
CPV classifications
  • 71621000 Technical analysis or consultancy services
  • 79212000 Auditing services

What happened

The contract runs until 31 Mar 2028.

Description

The NorTMS Audit is to undertake audits as required of the Northern Transport Modelling System (NorTMS), a Cube-based VDM with a focus on intercity rail in the North of England. These will be required on a call-off basis when a stable model release is available. After each audit the supplier will be expected to provide an audit report with recommendations for areas requiring improvement. This will be subject to a one+one+one year call-off basis.

TfN requires a supplier who is an expert CUBE model reviewer with competent Python skills as some elements of NorTMS are coded in Python, and who has not worked with NorTMS or related to any TfN framework directly involved in NorTMS, unless the work that was delivered relates to the audit of NorTMS.

The scope of work required for each NorTMS audit underpins the following objectives:

•Provision of a full audit of all NorTMS inputs and outputs with the aim of instilling confidence in NorTMS for its use in modelling works and supporting business cases.

•A review of each version of NorTMS following model updates and improvements prior to implementation on programme.

•To understand the fitness for purpose of NorTMS in its use for assessing schemes for Northern Powerhouse Rail (NPR).

•Production of a comprehensive audit report giving a RAG rating of all the model elements reviewed.

•A final report comprising of a plain English summary of issues identified (for a general audience) and a detailed technical report (for a modelling audience) with potential recommendations for areas requiring improvement, an outline of best practices in CUBE and the application of CUBE as a modelling tool.

For more information about this opportunity, please visit the eSourcing portal at:

https://www.delta-esourcing.com/tenders/UK-UK-Manchester:-Technical-analysis-or-consultancy-services./37Z364B3KV

To respond to this opportunity, please click here:

https://www.delta-esourcing.com/respond/37Z364B3KV

How to engage

Transport for the North (TfN) invites suppliers to attend an upcoming engagement session to explore future opportunities within our procurement pipeline. This will be focussed on expected upcoming modelling and visualisation activity expected from early 2027. This session will provide an opportunity to gain insight into our requirements, anticipated timescales, and overall procurement approach. Event Details: •Date: 22 June 2025 •Time: 1:05pm •Location/Format: Online (Microsoft Teams) Registration: Please confirm your attendance by 5:00pm on 19 June by emailing Emily Molden at [email protected]. We look forward to your response and hope you are able to join us for this session.

Contact

Address
Level 6, Town Hall Extension, Lloyd Street, Manchester, M2 5DB
Contact name
Emily Molden

Bid documents

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Identifiers

Notice ID
048097-2026
OCID
ocds-h6vhtk-06a1d3

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External ID: fts-ocds-h6vhtk-06a1d3 • Added 22 May 2026