Best universites in/around London fo Ph.D. antenna research

A colleague of mine is interested in doing research in the area of antennas - ideally in or around London. What are the best universites for this? We have come up with

1. Queen Mary Colleage
2. University College London
3. Surrey

Are there any others in/around London which are particularly strong in this area?

the best university in England for Antenna and Propagation research is University of Birmingham