Overview
- The full business case has been approved, confirming a funding package of about £140 million, including £77.8 million from the UK government, around £40 million from Cardiff Capital Region and roughly £21 million from the Welsh Government.
- The project will add a new southern entrance, expand the main concourse, extend platform 0, upgrade ticket gates and improve accessibility, waiting areas, retail space and cycle storage.
- The UK government states construction will start in spring 2026 with most work completed by 2029, while Transport for Wales indicates initial works in 2025 aiming for completion by 2028.
- The station will remain operational during phased construction, with some night-time work and temporary walking-route diversions planned to reduce disruption.
- The station redesign does not increase rail line capacity, with separate Network Rail and Transport for Wales schemes being developed to boost routes into and out of Cardiff Central.