Lost Theatre is small, but perfectly formed, tucked round a corner behind one of those gyms with windows to the street. The performance I was going to was a less sweaty one: taster acts of the Face to Face festival, a celebration of one-person theatre. On the way into the auditorium, posters for unexpectedly high profile past acts such as Russell Howard and Jack Whitehall line the walls. The draw for them is clear; the stage – jutting slightly out into the audience – is ideal for a solo performer; in fact, there is not a bad seat in the house.