I can confirm that the Cranfield HF course is v.good and does offer a very accommodating part-time arrangement.
Of course my opinion has nothing to do with the fact I'm currently sat opposite the guy running the course
The specific course is the Human Factors and Safety Assessment in Aeronautics MSc and assumes no prior HF background (although goes into much depth). The website (
www.cranfield.ac.uk) has a lot of good info on it, or you could always ring on 01234 750111 and ask for the Human Factors Group.
Sales pitch over
(For the sake of fair advertising I think City also offer a HF course)