Start talking to other singers/musicians - and a bit like Jinm Dixon said, ask them are they interested in meeting somewhere for a Jam.
The idea being a lot of places would welcome extra custom (especially in the UK )and to make it different ,have it in mind that anyone singing can be joined by any musician(s) who knows the song(s) . I go to a seesion like this - sometimes I don't fancy singing and just accompanying and sometimes I sing 6,7,8 songs over the course of the evening. Hunt down a friendly pub !!!!