Found it today, www.topshop.com/webapp/wcs/stores/servlet/ProductDisplay?&catalogId=19551&storeId=12556&categoryId=1 72664&parentcategoryrn=172663&productId=1279293&langId=-1 looks like this but black, wool mix, originally £95 - A TENNER.
It's a lovely cut and they had quite a few sizes. So if you're wanting a fitted coat, cheap as chips, it's worth looking.