Bristows @ Norwich. Single engine IR on B206 about 28K
Specialist aviation services @ Gloucester. Multi engine about 39K inc ME type rating
Bond @ Gloucester. No idea of price
Helicopter Services @ Booker. Multi engine IR on As355 approx 36K inc type rating.
Think you'll find most are fully booked for quite some months. In some cases well into middle of next year.
Comments either way tend not to be too helpful. Best advice is speak to them all, pay them a visit, and then decide.