Henlow
Dude,
Went to CAM Henlow last year to get mine and a mates initials done at the same time. Wg Cdr Hurley was the doc qual'd for initial class ones but he may have retired since then?? Sure there will be someone else there that may be able to help. Ext 8050 if you want to ask. Cost £60 and a bottle of Chateau-Neuf-Du-Pape for fitting me in at only a weeks notice! Bargain compared to approx £600 for the same med exam at Gatwick!!!!!
Got an ECG done at my RMC to take with me and borrowed the F Med 4 for the day and all was done in about 30-mins, followed by a very nice lunch in the mess. May not help as I am guessing you are nowhere near Henlow.