An extremely poor quality image, but one that captures an unusual working, passing an even more unusual train. During 1991 there was an odd out and back Cheltenham to Oxford train, using a Regional Railways Class 155 DMU, a type not usually seen on the Great Western Mainline. 155315 is seen here passing Steventon on 21 May 1991 with the return 2B22 19:46 Oxford to Cheltenham Spa train. Waiting to follow it out of the loop is the late running 6B23 13:12 Colnbrook to Waterston oil empties, with 37372 assisting the failed 60051 Mary Somerville.