Yup it's 1:16th... they do a tiny 1:18th version too but that's hader to get hold of outside of China. There are also some excellent micro touring cars, Truggies and Monster Trucks for bashing based on the same chassis...
Gadget box are the UK distributors. Himoto are the manufacturers for Maverick, Exceed etc etc...
And yes Littleport is a full time Permanent RC track, fully carpeted with pit rooms and balcony... It's owned and ran by the local Youth charity headed up by a great chap called Phil, they have full timing system installed and have all the facilitys including an RC shop inside the building. However like I said it's Mardave and was not BRCA affiliated the last time I went a couple of months ago. Littleport is open for racing on Wednesday for Adults and Monday and Friday for 9+
I have a Mardave but it bores me a little too hehe
J