London: Westminster Bridge closed as police respond to ‘security alert’

A security alert at St Thomas' Hospital, central London, led to road closures on Westminster Bridge. Report informs referring to BBC.

The alert began shortly after 10.00 BST, and armed police were reported to be on site. The Metropolitan Police said officers had been stood down within 30 minutes.

Patients took to social media to say they had been evacuated from some wards.
Police cordons around the hospital have now been removed, though roads in the area remain busy.