Behold! It's the Karcher K5 pressure washer – and this jetwash system could well save your patio for this summer's promised sunshine. Especially if it's been looking as winter-weathered as mine.

This extends to Black Friday pressure washer deals, and there are many products from the top brands such as Karcher, Nilfisk, Worx and more that are still on offer – despite the big event going by.

The pricey but powerful Karcher range dominates T3's best pressure washer – so is this competitor model good enough to get a look in? I tested one out to see – read on for my full Nilfisk Core ...