Collection

DfT major projects: business case publications

Business cases for major projects by the Department for Transport.

• From: Department for Transport
• Published: 4 February 2026

All projects and programmes on the Government Major Projects Portfolio (GMPP) must publish a summary business case, full business case, or programme business case within 4 months of receiving HM Treasury approval.

Collection

• 22 February 2024: A428 Black Cat to Caxton Gibbet – full business case
  • 22 February 2024
  • Transparency data
• 30 June 2023: A417 missing link scheme – full business case
  • 30 June 2023
  • Transparency data

Published 4 February 2026