L402 (51335, 59487 & 51377) comes off the flyash loop at Didcot Power Station on 20 February 1993, after traversing the site with the Branch Line Society's 'Thames & Chiltern Rambler' railtour. At least one tour participant is getting a picture of 60069 Humphry Davy waiting to leave with the 6E13 12:15 Didcot to Barrow Hill MGR empties. The railtour had originated from Bishops Stortford (a very unusual location for a Reading based DMU such as L402), and then travelled to the West London area, for the first freight branch highlight - the Park Royal Guinness branch. It then travelled via the Chiltern Line to the UKF fertilizer depot at Akeman Street, before coming to Didcot via the Bicester to Oxford line.