Source: https://tendernation.io/opportunities/01a13cc8-4b08-7351-be12-c94e33a1e373/cpt-23-55-dft-2023-24-audit-work-service closed GB open procedure Suitable for SMEs # CPT\_23\_55 DFT 2023-24 Audit work service [National Audit Office](https://tendernation.io/buyers/national-audit-office) Estimated value £50,000 Published 14 Nov 2023 Deadline Closed 15 Dec 2023 ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Small contract value Valued under £135,018 including VAT, the lowest Procurement Act threshold for goods and services. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender The National Audit Office (NAO) the UK's independent public spending watchdog is seeking a supplier who can consult on rail engineering assumptions underpinning a financial model owned by Network Rail in support of our 2023-24 audit work on the Department for Transport (DfT) Group accounts. The assumptions principally relate to high-level design of modern GB railway network elements, and feed into a theoretical model. . The service is anticipated to commence in January 2024 and with a desired completion date by late June 2024, with early delivery preferred. This is a one-off engagement so there will not be an option to extend. The estimated value of the contract is £50,000 excluding VAT, but no guarantee is given as to the actual value of the contract. Additional information: Registering for access: The Access Code number for this contract opportunity is NY38Q8QP7Z and the system that NAO will use to electronically conduct this procurement exercise is Delta eSourcing system at [login.bipsolutions.com/casDelta/login](https://login.bipsolutions.com/casDelta/login?service=https://www.delta-esourcing.com/delta/j_spring_cas_security_check). If organisations are interested in this new contract opportunity, then register onto the system by clicking the " Register as a Supplier" link. Once logged into the system, organisations will be able to locate this procurement by using the Access Code number NY38Q8QP7Z. Then select "Register Interest" to be able to access the documentation for this procurement and subsequently submit your response. For assistance, please contact the Delta Help Desk on 0800 923 9236. Read full description ## CPV classification Auditing services Source Contracts Finder (UK) [View official notice](https://www.contractsfinder.service.gov.uk/notice/bb62db77-75aa-4ca0-b34f-b74965e73de1) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile National Audit Office: past awards and live tenders](https://tendernation.io/buyers/national-audit-office) [Sector More Business services tenders](https://tendernation.io/sectors/business-services) ## More tenders like this [Printing and distribution services – SGCD53\_MARCHE\_ELECTIONS\_BRGE · Préfecture de la Mayenne · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-7726-73f4-bb67-b3121363d6bf/france-printing-and-distribution-services-sgcd53-marche-elections-brge) [Business travel services – Rahmenvertrag Bearbeitung von Reisekostenabrechnungen nach BRKG · GSI Helmholtzzentrum für Schwerionenforschung GmbH · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-cd6e-73e4-b6e8-3954e5689021/germany-business-travel-services-rahmenvertrag-bearbeitung-von-reisekostenab) [Photocopying services – Externe printdiensten · VZW Sint-Paulusschool · 36 days left · 24 Nov 2026](https://tendernation.io/opportunities/01a15183-34d8-71be-840d-38bf2a8bcc92/belgium-photocopying-services-externe-printdiensten) [Supply services of personnel including temporary staff – Diák- és nyugdíjas munkaerő biztosítása NTH (376) · NTH Nemzeti Tőkeholding Zrt. · 11 days left · 30 Oct 2026](https://tendernation.io/opportunities/01a15183-76f6-70c4-823e-7b614dada7b3/hungary-supply-services-of-personnel-including-temporary-staff-diak-es-nyug) [Interpretation services – Tolktjänster · Stockholms läns sjukvårdsområde · 31 days left · 18 Nov 2026](https://tendernation.io/opportunities/01a15183-4e9a-70dc-8b27-e3d274e53dc5/sweden-interpretation-services-tolktjanster) [Graphic design services – MAGAZINE DES PAYS DE LA LOIRE - LOT1 MISE EN PAGE · Région des Pays de la Loire · 32 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a15183-cd94-7139-b774-287bdb24987c/france-graphic-design-services-magazine-des-pays-de-la-loire-lot1-mise-en)