On the 23rd September 1970 the delivery of QRS vehicles to Quainton was completed via a track slew using D5240 propelling the stock from Aylesbury. From the Claydon end the train consisted of:

• A BR 20T brake van (not for Quainton)
• LNER 5-Compartment Brake 3rd No. 41384
• MR 2944 Brake Corridor Clerestory
• GWR Brake Van No. 68642
• LNWR 1st Class Diner No. 77
• LNER Buffet No. 9118
• Metropolitan No. 1

QRS loco Sir Thomas handled the shunting of the stock from the main line into the Down Yard. At the end of the shunt the track was re-connected to the main line and D5240 and the brake van returned to Aylesbury. D5240 was scrapped by British Railways in February 1983 at BREL Swindon Works.