KC-10 driver:
In order to access the UK-AIP and also Aeronautical Information Circulars (AIC) go to:
www.ais.org.uk
You'll have to register as a user but that's just a formality. It's all free at the point of use, for documents that used to cost hundreds of $$$ a year in paper form - excellent!
Cheers,
The Odd One