I Know a lady in Cockernoe, just north of Luton.
She does training classes and is a trained behaviourist. I have no idea of her prices for 1:1, but if you are interested in this area, PM me, and I'll send you the link to her own website.
She is APDT Qualified.
Editd to say, I found her classes, very good. I don't think shes cheap.
Regards