Interesting info checked their website and was interested to see they do vapour blasting, can't say I know of any local to the Guildford area (dare say someone will prove how ignorant I am on that....)
On the subject of Ultrasonic Cleaners I play with these a bit at work (and sorry, no I can squeeze the odd home widget in! not even my own!!), and although not wanting to take business away from these guys, I had a quick look on the web from a scientific company to get an idea of price and although not cheap, maybe a bunch of mates (monkeys) might consider pooling some dosh?
This particular one comes in at just under £500 (not cheap, but do the maths).
LINK REMOVED AS SUSPECT (tho OK for me using AVG protection) BUT BETTER SAFE THAN SORRY - THANKS SIMON
HERE'S A NEW ONE http://www.fisher.co.uk/ then type in "142-6001" ino the site's 'Search' box (top left)USC300T, 2.80 Litre, 237mmx134mmx100mm Internal dimensions, 160Watt, cat ID 142-6001
Some cleaning solvents might need to be bought, depends on what needs to be cleaned, but apart from that, it just a bit of lekky.
If anyone decides to buy/use one, theres a big NO NO (elf n safety wise) Don't put your hand/fingers in the solution when its on. I've heard it reported that it can cause air bubbles in the bloodstream with potentially fatal consequences.
On that cheery note..............