Nigel: Apologies for my misunderstanding, and thanks for posting the letter. I had the impression from various commentators (none of whose names I remember) on the TV who were discussing the subject when Chinese involvement was first mooted there was some discomfort about letting them near our infrastructure, especially as they would require access to systems that had significance for national security.

Meanwhile, the revelations on Panorama about Apple and their discussions about democracy on the Isle of Man are pretty shocking, although the papers (erm, Grauniad at least) seem to gloss over this. Hmmm.