The first visit of Colas Rail's former LNER HST power cars on the Cotswold Line took place on 3 November 2021, when 43251 & 43272 worked the 1Z22 07:45 Derby RTC to Bristol Kingsland Road Network Rail test train. This left Derby 85 minutes late, but was actually early arriving at Worcester. This didn't stop it losing is path over the single track section between Charlbury and Wolvercote Junction. It is pictured here running 24 minutes late, with 43251 leading, passing Cornbury Park, having just left the double track section at Charlbury station.