Petite Clothing London Petite Running Tights / Clothing?

Petite running tights / clothing? - petite clothing london

I'm barely 5 feet and has recently taken on the race I was very comfortable in my shorts until the weather was bad, but now I want to re-cover and keep hot. I do not want anything too bulky and have tried to find a pair of leggings / tights, running too long. Can anyone recommend where I dress short runs in the United Kingdom, Hertfordshire, preferably London area to find?