Could you perhaps get a taxi instead of having to use the underground.
I hate the tube and, like you, get anxious at the thought.
I'm okay with mainline trains (just) but the thought of descending underground fills me with dread so either hop on a London bus or, jump in a taxi to get to the theatre etc
You could say it was your treat fishes been generous with tickets/gifts
Anyone got any ideas for washing handkerchiefs


