Four additional Typhoon jets have arrived at RAF Akrotiri.
The jets, from RAF Lossiemouth, will support airstrikes against IS now that the campaign has been extended to include targets in Syria as well as Iraq.
A further two Typhoons as well as two Tornados are due to join the aircraft already on the base in Cyprus shortly.
The shadow chancellor warned it could foster another generation of militants determined to commit a Paris-style terror attack.
The Defence Secretary has warned the RAF that the fight against Islamic State will not be short or simple.
Officers were posted outside the constituency office of Neil Coyle, the Labour MP for Bermondsey & Old Southwark.