On 4 August 1991 Pathfinder Tours ran a number of special trains around Gloucester, including a tour to Sharpness with 31102 and 33064 as seen here
20169 and 20210 also appeared, seen at Gloucester on a train to Kemble.
20075 and 20170 having returned to Gloucester from Sharpness. All four class 20s later worked together on a train back to Manchester.
37891 and 56032 with another special service at Gloucester on 4 August 1991, this one to Westerleigh.