I've just have a rather eventful commute this morning. Traveled Horsham to Farringdon but trains not running through Redhill due to a points failure, so 7:55 Thameslink service cancelled and Victoria service rerouted along the Mole Valley line stopping only at Clapham Junction and Victoria. After seeking advice I got the 7:50 Victoria train with the intention of getting to Blackfriars via the Central line, from there it is an easy journey to Farringdon. When I got to the Central Line barriers at Victoria I was not allowed through without buying a ticket despite my explanation that I was only using this route due to major disruption (My original tickets were not valid on the underground). Am I allowed to claim back the cost of the underground ticket and if so, how do I do it as there is no facility on the delay-repay form for this situation?