I used this chap.
Had an ECG at the initial medical as I am over 40 and it was £100.
He said the renewal was cheaper at aound £70 I believe.
He is also a pilot himself out of Gamston.
Very pleasant.
As an aside, if you are into Air Force memorabilia and such, his surgery is in the old HQ building at the former RAF Manby.
Some interesting bits and pieces on the walls
Dr P J Mansfield
Good Healthkeeping
Garrod House
Manby Park
LOUTH
Lincolnshire
UK
LN11 8UT
Tel: 01507 329100
Fax: 01507 329111