The Sunday Times claims that MI6 is helping the anti-Assad forces launch attacks on Syrian forces.
Britain has two military bases in Cyprus, one in Dhekelia and the other in Akrotiri.
"It's thought that information is being gathered at Ayios Nikolaos, in the British Sovereign Base Area of Dhekelia, a listening station of the spying network ECHELON."
British bases in Cyprus supporting Syrian rebels - reports
Al Qaeda Insinuating Its Way Into Syria's Conflict - New York Times
AL QAEDA ARE MERCENARIES, LINKED TO DRUGS
RAF Akrotiri is the biggest British air base outside the UK.
"Apart from its role as a staging post for military planes and troops for a wide range of operations, since the 1960s it has also been the base of American U-2 spy planes, flying as high as 20 km as far as Afghanistan, monitoring communications and collecting high resolution photos of territories being overflown.
"Recently the U-2s in Akrotiri participated in the enforcement of the no-fly zone over Libya.
"More controversial, however, is their use over Turkey and Lebanon...
"Likewise, the U-2s gathered Intelligence over Turkey and northern Iraq..."
British Bases in Cyprus and Signals Intelligence - Cryptome (via http://thesignificanceofr.blogspot.co.uk/)
MOSSAD is using Nicosia in Cyprus, according to a leaked cable