Grade II listed - "Former model lodging house for workers on the Great Western Railway, begun 1847, revised and completed 1853-1855; converted to a Wesleyan chapel in 1869, in use until 1959; converted again to house Great Western Railway Museum, 1962-2000; currently (2020) used for education and performance." - Link.
Sadly, this attractive clock has been removed and put into storage pending changes to the area where it was situated. When and where it will re-appear is anyone's guess.