We've been using MK Gearbox Centre for years. They're always honest and never over charge. A really great family run business.
Assisted me with a warranty claim, fixing the gearbox. They also kindly advised of clutch and fliwheel wear, in line with the age and mileage of vehicle. A very good value quote and prompt work. Always answered the phone and provided updates whenever requested. Car is driving exceptionally well. Garage is easily walkable from Bletchley Station also. Highly recommended.