I've used Charlie Martin's studio in Whitwick. It's in part of a factory and if you go on the weekends/evenings you can sometimes get access to the rest of the building (which has plenty of character). Charlie has a lot of lighting gear and is a thoroughly nice guy too. My only word of warning would be that anywhere outside the studio (i.e. the rest of the factory) is absolutely freezing this time of year but the studio space itself is heated.
(parents live in Thringstone, used to live in Loughborough)