London, England, United Kingdom
The Bull Engine The largest engine of its type in existence and the only example still in its original location. The design was developed by Edward Bull in the 1790s and subsequently by Harvey and Company in Cornwall. — Kew Bridge Steam Museum, Green Dragon Lane, Brentford TW8
Listen to the audio guide for Bull Engine red and black plaque Free on WIP — starts by itself when you arrive, even with the screen off