Moose
Right here goes........There is a training Company
www.d-l-r.co.uk which covers this area - he comes highly recommended and is apparently one of the best when it comes to access. He covers both the training and development side of things. My wife has used him for access training with some of her own customers with excellent feedback.
Alternatively, there are a number of training companies in and around Cambridge (Yellow pages is the best place to find) - but the quality is a bit hit and miss. Most Companies only tend to cover the likes of Excel / Word and only basic Access.
(Good) advanced access courses are hard to come by around here.
There are two types of training available - Corporate which is focussed on businesses. This is the best but comes at a price, and unfortunately does not end up with a qualification.
There is also alot of goverment funded training around at the moment, which does give you a qualification - but this is very basic stuff really designed at "getting people back to work" I would stear clear of this - if you have already designed a database for work then you probably know more than the people who would be training you on these types of courses.
I see you have been using this site for some time - I can only guess that you the only one who knows anything about access in your workplace - it can be a lonley old world if so, and if you are like me find this site of great help. Stick with it.
Best of luck
Richio