Could also try Stapleford. I've just completed my cpl/ir there.
I can also vouch for andrews field. I did my night rating there and know some of the people who fly there regularly. All seem a friendly bunch esp the hardcore friday nighters.
If you want to do your cpl/ir stapleford might be a better bet as it has an FNPT2 sim which you can do upto ?35? hours of the ir in. Half the price of acutally flying the twin.
When i spoke to carol about the cpl/ir at andrews field, i think by her own admission, the twin is/was a bit of a problem during the wetter months. Best check with them to see how they're going.
Send me a pm if you want more info about stapleford.