Hey thanks Chris, good advice all taken on board
I'm someone who can't really stray too far from what he knows and and when I used to do carpets i went on probably one course a year to gain info and stay current.
There doesn't seem to be anything official for outdoor work such as best way to clean a conservatory, driveway cleaning etc for anyone who wished to go into that as a newbie, or if there is I can't find anything.
If you start carpet cleaning you have difficulty picking which course to go on but just thinking for anyone experienced and willing to share (not all their secrets of course) their knowledge of outdoor cleaning there could be an opportunity.