If you live in the UK - you are in the fortunate position to have relatively easy access to Dodo Juice -
http://www.dodojuice.com/dodo-juice-detailing.html
They have excellent products and accessories and also an excellent detailing forum:
http://dodojuice.com/juicebar//viewt...t=259&start=15
You may need to go the high pressure washer and foam lance way.
Hope this helps!