Pressure washer sorted... was looking at the Karcher K4 then discovered B&Q had it on sale today (ending tonight) from £230 down to £180. And as the local B&Q is less than a mile away and had it in stock.....
Its a bit more expensive than the compact version but comes with home kit (the big whirly cleaning thing) for doing the patio/drive blockwork etc. and takes bottles of cleaner onboard rather than drawing detergent through a hose (the last K2 i used with this I ended up knocking the bottle over and spilled half of it as I dragged the unit around
)
http://www.diy.com/departments/karch...1254861_BQ.prd
Just a snowfoam lance and bottle of foam to order now.