Also I can't see that bursting into a pub and performing a short play will be seen by the courts as purely for our enjoyment. Pushing the point a bit.

Sadly I would tend to agree.

Unlike a participatory session - which I accept may certainly have added value in the presence of an appreciative pub crowd but is NOT for that purpose and could still repeatedly take place to the satisfaction of the participants without any form of audience. It is difficult to argue that you could or would continue to perform in the continued absence of spectators.

You do at least have a year to work on the route of pressurising the Secretary of State to change the words of Schedule 1, before you need to think about paying for TENs.