I spent some time at Tony Hughes' outfit (Wiltshire Microlight School) near Yatesbury. Its just West of Marlborough on the M4.
Yes, its a bit of a slog but its worth it.
Tony is a decent guy, very enthusiastic. He teaches well (I'm very critical when it comes to instructors) and is fairly strict when it comes to standards. He won't tolerate sloppiness. His school made me a better pilot for sure. He owns his airfield and has top notch machinery. He can also sell you or help you buy second hand machinery with his extensive technical knowledge.
The facilities are also comfortable and well organised. The clubhouse is good and well stocked with food and drink. Definitely a cut above the other schools I've experienced.