On 4 August I purchased an Off-Peak RTN from Euston to Liverpool Lime Street using my 16-25 Railcard. My Railcard expired on 6 August 2015; however, I have since become eligible for the Disabled Railcard (and have duly purchased that card). I would like to use the return portion of my ticket (valid until 3 September 2015). Obviously I know the official line; i.e. this MUST be accompanied by 16-25 R/C; however, given that the price of this ticket with the DSB R/C is exactly the same price am I likely to encounter a 'pantomime' should I present this ticket with the DSB card (which is now valid)? On a separate issue would I be right in thinking that a Liverpool/Euston return portion used via Sheffield would be a permitted route? Thanks in advance!