Failed Caledonian blue liveried 47727 Caisteal Dhun Eideann / Edinburgh Castle brings up the rear of the GBRf Charity Railtours 1Z52 18:35 Birmingham International to Basingstoke 'Dub & Grub' railtour at Banbury 5 August 2018. It should have been on the front, but 50049 Defiance & 50007 Hercules were having an unexpected outing to the south instead!