Paul Holland of the British Antarctic Survey (BAS) stuck to his findings last year that a shift in winds linked to climate change was blowing ice away from the coast, allowing exposed water in some areas to freeze and make yet more ice.

BBC: Melt may explain Antarctica's sea ice expansion

Last August Mr Ayling spelled out his intention to shift his focus gradually from cut-price leisure travellers to the premium passengers from whom airlines make money.

ECONOMIST: British Airways

Mr Mohamud said there had been a paradigm shift in Somalia since his government took office last year.

BBC: Somali conflict: Mohamud and Cameron hail 'new era'