Hi Tre
There is only one trade association of note
www.ncca.co.uk plus, of course, IICRC which you will be aware of and yes, I do know it's not a trade association
Trade shows are Carpex (biennial) in 2010 and we had our main general cleaning show a couple of months ago (biennial)
http://www.cleaningshow.co.uk/We have various minor shows and events throughout the year on a local scale such as
www.ccdo.co.uk and the NCCA run various workshops, technical roadshows and other events throughout the year, again regionally.
Nothing else springs to mind at the moment.
Safe and happy cleaning
The Ken