I live in Cornwall and need to take a trip that goes like this....
Cornwall....London Paddington....London Euston....Milton Keynes.
Going there is fine but coming home I will be leaving quite late and the time I leave needs to be flexible. So I'm thinking of travelling back to London because there's loads of trains and then booking a room in London for the night before coming back to Cornwall the day after.
Is that allowed with an open return?