Actually there was a course in england few years ago provided by Grant Gamble, author of some great InDesign Scripting book :
You may try to reach the guy for a quote through his linkedin page:
Or in yellow pages maybe ?
I think quite a few of the major participants of the forum here could give some pretty good 1-2-1 training either via sky or the regular phone line. You can look up the participants details on the site here to see if it looks like there suitable, I myself am busy for the next month but if your interested in principle then leave a post here and if any of the regulars are interested then they can send you a private mail. I have no doubt that Kasyan or Loic amongst others are more than capable of giving a 1-2-1 course. I would be willing to give a course but only in another months time.
Good luck with your search,
P.s. I was born and bred in London, but I'm not located there any more.