Hozelock Auto Reel 2595
Best buy
This is a monster of a reel, at 17kg, so you need a good fixing for the substantial wall bracket.
But once installed, it’s a dream to use, releasing and rewinding easily and reliably with a great locking mechanism. No need to manhandle the hose, either, as a guide layers the huge 40-metre hose (a cheaper 30-metre version is also available). A class act.