Out Manchester Piccadilly to Euston 28th Oct and return 8th November with Avanti West Coast. I was expecting to be able to get 1857 from Euston on 8th November as it's earliest off peak train that evening. When I booked (via LNER) there was no strike on 9th November so I didn't anticipate any issues but because there's now strikes on 7th and 9th Avanti haven't yet got a revised timetable for 8th November. I wondered where I stood re using my ticket as obviously I can't prove I was going to get the 1857 on 8th November as I have an open return. As I'm worried about getting home I also wondered if I could get an earlier peak train and pay the difference though I don't know how the difference is calculated in this instance.