Bad news Andy,
Be aware that Stafford Autojumble is coming up too.
It is worth making up flyers for all local bikeshops and also normal shops in your area. I knew someone who got his bike back because it just became too hot to handle.He had posters everywhere and wouldn't give up.
Offer a reward too, scrotes mates are usually scrotes too, and will gladly try and make a bit off their own.
Hope it works out for you.
Cheers,
Iain