In previous years I've got the pressure washer out and squirted off areas, brushed them, etc. and frankly its hard work. I once did the whole lot in a long day and couldn't move for days. Yes I'm obviously getting old.
Anyway when I was walking Lulu a couple of weeks ago I spotted a van with Patio Cleaning emblazoned on the side. After the usual diligent enquiries a week later the deal was struck and the work commissioned. I have to say I was a bit dubious when the guy said it's take an afternoon, but he seemed happy with the deal so we asked him to get on with it!
He used a sort of hover mower rotary cleaner thing and it cleaned the slabs in no time, and didn't use any detergent which is important for the pond or spray water and muck everywhere either.
I don't know where he got the thing and have never seen one before but wish I'd bought one years ago!
We now have a sparkling paved area, pond wall and conservatory, all done in half a day by a bloke with the right equipment! Here's the finished job, just waiting for the return of the clutter. Brilliant. How easy was that!