Well why don't you go for the interview anyway?
Nothing ventured, nothing gained!
As for what's going wrong. Well, I'm sure you can ask at your interview, the answer you can then share with the rest of us. I'm sure it will make interesting reading.
Whilst you're in Gloucester why not arrange at interview with Bond. You'll then kill 2 birds with one stone.
Having had the pleasure of working for both of them I can tell you that they're not vastly different, so that will just leave the Money! I'm sure you've already worked out who's paying more.