Following rebuilding as 4-2-2 tender locomotives at Swindon, the three remaining 8 feet 10 inch 4-2-4T locomotives had slightly smaller 8 feet diameter driving wheels and worked alongside the rigid-framed GWR Rover class and the remaining 1849-built ex-Bristol and Exeter Railway 4-2-2 locomotives on express passenger trains.
Reed, P. J. T. (February 1953). White, D. E. (ed.). The Locomotives of the Great Western Railway, Part 2: Broad Gauge. Kenilworth: RCTS. ISBN0-901115-32-0. OCLC650490992.{{cite book}}: CS1 maint: ignored ISBN errors (link)