Can anyone recommend a decent mechanic in the Woodbridge area of Suffolk?
When I lived in Pettistree, these guys looked after my MX http://www.coltecracing.com/ they are out at Grundisburgh
ps if you use them please give my regards to Martin the mechanic 
Hope this isn’t too late for you but I’d wholeheartedly recommend Richard Pipe Engineering in Martlesham. They’re not MX5 or Mazda specialists but they are excellent. They’ll be honest with you about everything from when they can actually have the work completed to how much and whether you actually need to change your brake pads, cam belt etc etc etc. All at great value too.
Worth a phone call.
Obviously the usual disclaimers about working for them, advertising for them etc apply