LikeSilentRaindrops thanks, those are nice but they're just ponchos, whilst I am looking for something that's between a poncho and a jumper. Different shops call them different things I guess.
Clickncollect I am not usually a fan of asymmetric clothing but that's a lovely jumper. Is it burgundy? I am not sure I can pull off that colour but it would make a nice departure from black. What's the sizing like? I am a short pear shaped size 10 (some would argue my bum is a size 12 though...).