155314 approaches Culham on 22 June 1990 with the 2A35 17:37 Cheltenham Spa to Oxford Regional Railways service. At this time all the local trains on this line were still in the hands of first generation units (mostly Class 117s), with only the Cotswold Line trains using the then new Class 155s. However, this Cheltenham to Oxford (via Swindon) service also brought the new order to the route. Although this train was booked to leave Didcot Parkway at 19:02, it depended on the day of the week as to how quickly it got to Oxford! Mondays to Thursdays it arrived at 19:15, but on Fridays it didn't arrive until 19:22. This was presumably to avoid a conflicting move with the 1B58 18:20 Paddington to Hereford, which also took longer on Fridays.