FD Mapping In Northamptonshire?

[last.temptation]

Hi all,
Does anyone have any suggestions for the best places to have engine mapping undertaken in or around Northamptonshire on my FD?
 
Thanks for checking out my post
LT

[BlitzBoy]

the only rotary places for mapping up north is WGT in Cheshire, down south I map at Farnborough on some Saturdays at Surrey Rolling Road , Jaydee at North London, Hayward in Newbury