My problem is not as bad as yours but I am UK too. I do not have much money so I have to get most of my clothes in charity shops,I am 5"6 and 59kg (when I weighed myself a few weeks ago anyway) I am size 6/8 and I have such little choice it is ridiculous, it just annoys me all the more to look at racks and racks of clothes 12 +. My friend who is a UK 4 can only buy her size online or in a few shops in London when she lives in North Wales.