Trading in several of Britain’s biggest firms was suspended amid fresh stock market turmoil. Barclays and Royal Bank of Scotland were among those whose stock was frozen after a sudden drop. Automatic circuit breakers kick in when a company’s share price falls – or rises – by more than 8%.

All trading in its shares are suspended for five minutes to try to take the heat out of the situation. Shares in some of the UK’s biggest builders – Taylor Wimpey, Barratt and Berkeley Group – were also put on hold, along with budget airline easyJet and Legal & General. READ MORE