UK company Freestyle know a lot about horribly wet weather and this simple shell jacket is top value. The fit relies on elasticated edges but nothing is too breezy, baggy or tight and there's enough slack in the sleeves to pull them up for cooling.
The waterproof fabric is fully seam taped and showed no signs of buckling under heavy rain, although the clammy interior doesn't add much warmth when it's windy. It also spreads the inevitable sweat build-up reasonably wide so that it steams off faster than you'd expect for a waterproof jacket of this price. You'll still need to keep it calm on the climbs not to get sodden though.
There are no pockets besides an internal key stash and the zip could do with a puller, but if you're on a £40 budget then the 'can of beans' pack size, weight and performance are all good. The jacket comes in blue too for people who don't like the luminous commuter hue.