-
Just do it (although keep in mind most evening 10s are starting to finish for the year).
I started doing my local club's evening 10 last year on my road bike and enjoyed it, coming more or less last each time.
This year knocked a minute of my PB and won the clubs handicap trophy. It's been a lot of fun, and the training and riding has made me loose weight and made me the fittest I've been for a while.
why not just turn up and give it a go, its a lot less intimidating that you'd imagine, and there are always a broad range of people so the chances of you being first or last are slim as are the chances of you having the flashiest or shittiest bike there.
assuming your bike is road legal and in the light of last weeks court case id hope to god everyone in the world is, then turn up, pay your £4, pin your number on and have bit of fun.