68015 approaches Islip on 21 June 2017 with the 1T54 18:18 Marylebone to Oxford Chiltern Railways service. Despite it being a generally sunny day, I thought I might miss out on this one, as the sun had disappeared into a bank of cloud. Luckily however, that wasn't the end, as it reappeared again for another 40 minutes of light, before the clouds finally won!