Originally Posted by Mr Optimistic
Since the Russian authorities appear to resent the Intel the UK has, courtesy of the USA no doubt, it would seem the evidence is equivocal.
No need to be so snide about the UK - it does actually contribute something into the intelligence relationship from time to time! In this particular case I suspect that its listening post on Cyprus may have had something to do with it.
https://en.wikipedia.org/wiki/Ayios_Nikolaos_Station