I have received an email drawing my attention to the fact that Screwfix are offering the Karcher K2 110bar Pressure Washer at £89.99, see here for details.
This seemed a reasonable deal so I decided to look around at what others were charging. What I found was this offer from Tesco who are offering the Karcher K2 pressure washer at £79.99, the Tesco deal also includes a car cleaning brush and a car shampoo pouch which it looks like the Screwfix deal does not.