This photo makes me happy.
From Leon Daniels’ blog:
Last night we carried out a test designed to demonstrate the feasibility of running a steam locomotive on the London Underground for its 150th anniversary in 2013.
Locomotive Met no 1 and the Metropolitan first class ‘Jubilee’ coach 353 are currently being restored and fundraising is underway. Restoration of both vehicles is progressing and the London Transport Museum is overseeing both the fundraising and the restoration projects.
To have a working steam locomotive on the Underground presents significant challenges and last night after end own traffic a special train undertook some proving runs. Beattie 30587 the steam locomotive used. It is owned by the National Railway Museum and was built in 1874. It was coupled to 1923 Metropolitan Electric loco ‘Sarah Siddons’ which provided a viewing platform, and between two battery locomotives and wagons carrying water and coal.