Two of these locomotives, N°457 Clausentum and N°458 Ironside, were built by Hawthorn Leslie in 1890 though they did not receive their numbers until 1901. Originally built with 3' 0" driving wheels, at some stage these were replaced with wheels of 3' 2" diameter. They were both transferred to the Running Department in March 1901 and sent to work the Town Quay and Pier, being replaced in the docks by B4 Class locos N°89 Trouville and N°90 Caen. These two locomotives were subsequently renumbered as 0457 and 0458 and denoted as the "0458 Class", with N°0457 later becoming 734 and remaining in service until September 1945, when it was withdrawn, whilst N°0458 became N°3458 and survived into British Railways' ownership where, as N°30458, it spent its last years shedded at Guildford.