We'll get a look inside Heathrow's new Terminal 2 later. The £2.5b renovation project should be finished by June.
There'll be more natural light and partner airlines will be closer together to improve flight connections. Airport bosses say they're determined not to have a repeat of the chaos when Terminal 5 opened six years ago - with bags lost and long delays.
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A windy but mostly dry start with the best of the bright spells towards the south east. Becoming cloudy with heavy showers later
Very windy with heavy rain moving east tonight. Becoming drier but staying windy later. Then sunny spells and strong winds tomorrow
Heavy rain and strong winds this evening. The rain will clear tonight but staying windy, especially along the coast