9642 was built at Swindon in 1946.
BR motive power depot allocations since 1948.
| Date Arrived | Depot |
| January 1948 | Weymouth |
| May 1948 | Bridport |
| August 1948 | Weymouth |
| October 1948 | Bridport |
| November 1948 | Weymouth |
| December 1948 | Bridport |
| December 1949 | Weymouth (stored from September 1956) |
| December 1956 | Abercynon |
| May 1958 | St Philips Marsh |
| March 1959 | Southall |
| July 1964 | Old Oak Common |
9642 was withdrawn in November 1964 and sent to Hayes Scrapyard, but was used to shunt other locomotives. It was due to be scrapped in 1967 but was saved by the South Wales Pannier Group in 1968 and moved to Maesteg Colliery where it gave occasional brake van rides over the NCB track in the 1970s following being steamed again in 1969.
It was the first of the class to be preserved. It was later moved to the Swansea Valley Railway Society, and then the Dean Forest Railway in 1998.
In 2005, 9642 was bought privately for use on the Gloucestershire Warwickshire Railway. It was soon removed for overhaul and will return to operation when restoration is complete.
The chassis was sent to the Flour Mill in 2018 for attention to the cylinder blocks and rear frame stretchers.
In early 2019 it was reported that work on the boiler and frames was making good progress. The boiler work being undertaken by Locomotive Maintenance services at Loughborough was anticipated to be completed during 2019. The locomotive was anticipated to be back in steam in 2020.
The overhaul of the locomotive continued at the private site of Moveright International, Wishaw in 2020.
| Home Base | Current Status | Owner |
| Gloucestershire Warwickshire Railway | Under overhaul | Privately owned by Andrew Goodman of Railway Support Services Ltd |
Preserved British Steam Locomotives 