408493/1957 - British Rail No. 20 - BR Rail Blue - DCC Sound FittedRuston 408493 was built new for British Railways Western Region, for use at the Signalling & Telecommunications Department workshops at Reading and was delivered on 19 January 1957. Taking the Departmental number 20, the locomotive spent its entire lifetime at Reading, housed under the Vastern Road bridge when not in use. Renumbered in 1973 under TOPS, to 97020, withdrawal came in April 1981 and the shunter was disposed of at Reading by Cartrights of