Don't forget that FAA AME can be found in the UK.
http://www1.faa.gov
Under "Certification" select 'people'
Under "Training & Testing" select 'Medical Examiner Locater'
Then select the Uk and have a look.
It appears your closest one is in Grimsby 01472 234597
E.R.Allan 1st Class AME # 15693
Give the guy a call.
As Crepello said, Initial JAR Class 1 only at Gatwick £400. (ouch)