Operation Highbrow was a British Ministry of Defence (MoD) operation to evacuate civilians from Beirut as a result of the escalating 2006 Lebanon War. Initially, helicopters started ferrying the most vulnerable to Cyprus with several Royal Navy ships later transporting evacuees across the Mediterranean Sea to Cyprus. The operation involved Royal Navy surface ships and helicopters, with Royal Air Force helicopters also providing support and transit. The operation was described as being the largest evacuation that Britain was involved in since Dunkirk.

HMS Illustrious was a light aircraft carrier of the Royal Navy and the second of three Invincible-class ships constructed in the late 1970s and early 1980s. She was the fifth warship and second aircraft carrier to bear the name Illustrious, and was affectionately known to her crew as "Lusty". In 1982, the conflict in the Falklands necessitated that Illustrious be completed and rushed south to join her sister ship HMS Invincible and the veteran carrier HMS Hermes. To this end, she was brought forward by three months for completion at Swan Hunter Shipyard, then commissioned on 20 June 1982 at sea en route to Portsmouth Dockyard to take on board extra stores and crew. She arrived in the Falklands to relieve Invincible on 28 August 1982 in a steam past. Returning to the United Kingdom, she was not formally commissioned into the fleet until 20 March 1983. After her South Atlantic deployment, she was deployed on Operation Southern Watch in Iraq, then Operation Deny Flight in Bosnia during the 1990s and Operation Palliser in Sierra Leone in 2000. An extensive re-fit during 2002 prevented her from involvement in the 2003 Iraq War, but she was returned to service in time to assist British citizens trapped by the 2006 Lebanon War.