The UK has its credit rating outlook downgraded to "negative" by leading financial agency Moody's, as outgoing PM David Cameron faces pressure to speed up "divorce" talks with the EU.

London's big finance firms risk losing their privileged access to the EU, prompting big banks to move operations outside the UK, it is claimed.

The UK government must act quickly to secure favourable terms for a key export sector, says industry expert Professor David Bailey.

The UK's EU Commissioner Lord Hill announces he is to stand down, saying "what is done cannot be undone" after the UK votes to leave the European Union.

Brexit businessman Tim Martin, founder of the Wetherspoons pub chain, says anxiety is "understandable", but adds there is no need to rush into EU exit talks.

HSBC would move up to 1,000 staff from London to Paris if Britain left the single market and was not part of the European Economic Area, the BBC understands.