The US Government agencies have been doing this for a while now, but only to US companies.
Interesting reading this list :
BAE Systems - sort of British, not really though does more US work with its segregated US arm than anything else
Lockheed Martin - American
HP - American
BT - British
Thales - French
Cassidian - Part of EADS and German
CGI - Canadian
Selex - part of Finmechanica and Italian
Rolls Royce - are they still British owned?
So thats UK tax payers money propping up the security of non-UK companies when almost certainly all of those are getting support from their parent nations already.
Couldn't they have picked some Brit companies? Or aren't their any left with anything worth stealing?