In reply to triniriderz:
If you're keen, definitely book up with Glenmore Lodge. But, as with all things mountaineering, a 2-3 day course is worth very little unless you are getting out regularly.
You should look at joining a club. I'm in the LMC:
http://www.londonmountaineeringclub.com/
They have a "navigation" meet in North Wales this weekend and a "Winter Munro" meet in Scotland in December.
A club has got to be your best bet for getting out regularly. Climbing, walking or winter stuff.
Although you do get winter conditions in the Lakes and N Wales, realistically if you want to get some experience under your belt, you will have to travel to Scotland (or abroad - e.g. Norway for ice climbing; or, the Alps in the summer).
The biggest issue will be your commitment to that. If Scotland is too far, then one winter skills course is not quite a waste of time, but you may be better to wait until next summer and do an Alpine course.
Your other issue will be finding a partner. I wouldn't underestimate this as a logistical issue. Until you are confident enough to go out in winter on your own, you are going to need company - ideally someone more experienced.
Possibly joining a national club or a Scottish club - one with regular meets in Scotland, at least.
When I started (in 1992 - I was living in Nottingham at the time) I would go to the Lakes or Wales twice a month and Scotland for longer trips at Xmas and the Bank Holidays. Certainly, you need to try to get out once every month at least.
In conclusion, I think finding a training course is the least of it. I'll bet there are dozens of people every year who go on a winter skills course and it's 1-2 years until they next set foot on a mountain in winter. Going on a course is the easy bit!
Post edited at 12:25