- Class: BR 4MT
- Designer: Robert Riddles, with design work done at Brighton
- Wheels: 2-6-4T
- Built: 1957, Brighton Works
- Last Overhaul Completed: 27 July 2019
- Previously Operational: Oct 2001 to 19 May 2012
- Owned By: The 80151 Locomotive Company Limited (The Bluebell Railway Trust currently holds 40.3% of the shares in the company)
The 4MT tank locomotives were closely linked to the Bluebell line in the 1950s, and although the last Brighton-built locomotive, No. 80154, which also hauled the final train in 1958, escaped preservation, 80151 itself is known to have worked the line’s services on occasions. A one-time resident of Barry scrapyard, 80151 arrived from another preservation site in 1998 and returned to steam after the completion of its overhaul in the Bluebell’s workshops in October 2001. Quite apart from the close association of the class with the line, they are also the ideal locomotive for our services, and this is one of two such locomotives resident on the Bluebell.
Its latest overhaul, which cost over half a million pounds, saw routine heavy maintenance and boilerwork undertaken in-house, and new tyres fitted to the driving wheels.