Wheelspin are 20 mins from my house but i never use them. They never seem to have stock of anything its either special order or in the "warehouse".
The showroom is massive but they are only interested in the bashers market i.e people who will buy a car, play with it till it breaks and then forget about it or bring it back to wheelspin so they can repair it for a fee.
Personnaly as i race 1/8 and 1/10 ive used Bolton Modelmart, MB models (current favorite!) and JEspares without any major issues, most stuff arrives in 1-2 days and postage is resonable or free with some items.