British Airways cabin crew will begin a three-day strike over pay today.
BA say a small number of short-haul services to and from Heathrow will be cancelled.
All long-haul flights to and from Heathrow, Gatwick and Stansted, as well as all flights to and from London City, will run as normal.
Twitter user Harriet Tolputt shared this picture of the British Airways plane which clipped a building with its wing at an airport in Johannesburg.
None of the 180 passengers on board the plane were hurt but four ground employees in the damaged building sustained minor injuries.
The Airports Company South Africa (ACSA) has launched an investigation.
A British Airways plane bound for London clipped its wing on a nearby building as it was preparing to take off from Johannesburg on Sunday, South Africa's airports authority said.
The Boeing 747-400 carrying about 180 passengers was taxiing on the runway at O.R. Tambo International when its wing hit the building.
No one on the plane was hurt, but four ground employees who were in the building sustained minor injuries, the Airports Company South Africa (ACSA) said, adding that an investigation was underway.
Photos posted on social media site Twitter showed a brick building with what appeared to be an aircraft wing lodged in its top floor.
The largest commercial aircraft in the world has landed at Heathrow this morning.
The British Airways' A380 will later be moved to Manston in Kent where the aircraft will be based to undertake operations and crew training.
The Business and Energy Minister has hailed a UK airline after it was the first to take deliver of a superjumbo today.
The massive British Airways superjumbo flew into Heathrow airport. Michael Fallon said:
British Airways liveried Airbus A380, the world's largest passenger plane, arrived at Heathrow Airport today as BA became the first UK airline to take delivery of the massive superjumbo.