Tim Watts wrote:

I am about to buy [...]
a pressure washer - probably one of the Nilfisk models

I can recommend this eBay seller instead of Machine Mart

http://www.ebay.co.uk/itm/390640367353

The plastic hose does have a bit of a mind of its own though, I've seen
several people recommend a decent rubber replacement from qwashers

http://www.ebay.co.uk/itm/180880709388