According to their advertising, Aldi will be selling a softshell from Thursday 19th. Not sure what it is like, but thought I would mention it. Price about £20 from memory.
They had some last year - a friend bought one, and they were very good. If these are the same, I'll be getting one. Thin fleece on the inside, and the outer is hard to describe - sort of slick feeling (almost like neoprene, though it wasn't!), and water ran off it pretty well, though I wouldn't call it waterproof. Decent build quality too.