“All-season” in the UK is a bold claim. We’ve got drizzle that lasts all day, surprise heat in April, sideways rain in July, and winter commutes that feel like you’re riding through a cold shower with opinions. The truth is: no single jacket is perfect in every month, but there are jackets that make UK riding dramatically easier—because they’re built around the realities of wet roads, changing temperatures, and long hours in the saddle. This guide is about what’s genuinely worth buying if you want one jacket that covers most of the year (or a near-one-jacket solution with smart layering). We’ll keep it practical: what “all-season” actually means, the construction…