I've recenly had to start refreshing some of my first aid quals, and did an advinced first aid course with these guys.
A very small company that operates out of a lovely little area in the Peak District, offering courses at great prices.
The owner/instructor is a hugely experianced mountain/remote area medic who spends a lot of time in the Himalayas and the like. She's very good. They also use freelance instructors, one of whom on one of my courses was a trained paramedic and contractor with ArmourGroup (if I remember rightly) and a very very good instructor.
Well worth a look.
High Peak First Aid - Home