sorry, haven't got anyone in RL and only been to the capital once many moons ago.
I have a medical appointment in London coming with with disabled DC. We bought all the train tickets but I just noted that some of the train tickets are not from train station to train station but I have to make the way myself in between (such as from Liverpool Street to London Euston). Do I need to buy a tube ticket or can I just swipe my debit card?
Sorry if the question is stupid. Travel with DC is difficult and I thought I have every single leg covered.