The start of trading in FTSE 100 and 250 shares was delayed this morning on the London Stock Exchange (LSE) after an as-yet unexplained IT error.
Trading was expected to start at 09:40 after the incident.
The LSE outage is the longest in eight years.
It’s the third major infrastructure outage in Britain in a week, following an IT outage at British Airways that left tens of thousands of passengers stranded, and the major power cuts that left commuters in the dark on the underground.
Trading on the lesser AIM market continued.