Last in my list of settings for Blind-Date Marriage is the theatre mentioned in the final chapters. I used a real theatre that I have performed in myself (that sounds very grand, but it year upon year of dancing competitions when I was a school girl). Back then it was called Lewisham Theatre, but now it's called The Broadway Theatre.
It's a lovely art deco building that looks a little lived in and I thought it was just the right location for the charity show - a not too-posh-local theatre that hosts shows by local dance schools, pantomimes and acts that were big names a couple of decade ago. I can't seem to post any pictures, but follow the link and you'll get an idea.