It's surprising just how specialist conventional FE college courses can get for those inspired to get into a particular field. A flatmates' sister moved to England to take a course in piano tuning and repairing at a specialised musical instrument craft school within an institution that apparently also offers regular A-levels...
One of the more interesting is The Lititz Watch Technicum (http://lititzwatchtechnicum.org/) which is a 2 year certification program funded by Rolex.