The Great Western Railway Metropolitan Class 2-4-0T broad gauge steam locomotives with condensing apparatus were used for working trains on the Metropolitan Railway.

The equipment was later removed, though the class continued to work suburban trains on GWR lines in London.

[1] The locomotives were built by three workshops, each with a different naming system.

These were followed by a batch from the railway's own workshops at Swindon, that were named after flowers.

Around 1865, seven of the class were rebuilt as 2-4-0 tender locomotives: Hornet, Mogul, Azalia, Lily, Myrtle, Violet, Laurel.