The Piccadilly Theatre, is a medium sized theatre (about 1232 seats). There are three Wheelchair Spaces, available, they are all in the Stalls and are all Accessible via a lift.
There is a good view from the Stalls, as it is generously raked.
There is an Accessible Toilet, not far from the Accessible Seats. The Access to the Theatre is via a side door, and then a lift down to the Stalls, but it is easy to get in and out.
You can order drinks etc. to be delivered to your seats.
I am not sure about purchasing merchandise, but I am sure the Access Host would be happy to assist.
I would rate the Piccadilly Theatre, as 9/10