Worx Nitro HydroShot WG633E (20V)

The Worx Nitro HydroShot is the only pick here that needs neither a mains tap nor mains power, which is exactly why it earns a place: it draws water from a bucket, water butt, bottle or tank via a 6m suction hose and runs off Worx PowerShare 20V batteries, so it goes to balconies, allotments, boats, kerbside cars and muddy boots that corded machines can't reach. It manages up to 56 bar (38 bar rated) and 220 l/h from a brushless motor at around 1.5kg, with a 5-in-1 nozzle. But it is by far the weakest cleaner here and battery runtime is limited to roughly 20-30 minutes, so it is a top-up and convenience tool, not a substitute for a corded washer on big jobs. One important buying note: it is sold both as a bare tool (the £111.99 Screwfix price, with no battery or charger) and as kits with a battery for more — the bare-tool value collapses if you don't already own Worx PowerShare batteries, so check exactly which you are buying.