So I re-calculate, you made roughly £5.71 per 14 days to spend or half that eg £2.30 with tax and expenses removed.

Well the first time I had a job ever as an indy it was a no show. So you made more than me. I paid £30 for the room, £5 for travel. I didn't want the room provider out of pocket. See how it goes, learning experience, gain confidence and all that.

Yes been offered longer appointments but not on my day. I would rather do one day a month few hours earn a bit then come home and forget about it for a few weeks

Yea, by forget about it for a few weeks, do you mean, OP, that you effectively need to 'get over it'? Prostitution is one of those things that some people are cool about doing and as long as they have autonomy to make choices within it, it doesn't impact their wellbeing. But for some people prostitution is really something they don't want to do and as with all instances of doing something sexual you don't want to do this can negatively impact your well being. If you are placing such a restriction on your working hour possibilities this isn't really an issue about the agency per se.