The London police officer killed in the Westminster attack has been named as PC Keith Palmer. Late tonight, Metropolitan Police updated the number of those dead to five – including three members of the public, the police officer and the attacker.

Assistant Commissioner Mark Rowley said as many as 40 people were now injured and named the 48-year-old officer as the man attacked protecting parliament.

Three of the injured were police officers, two of whom were in a serious condition.

“One of those who died today was a police officer, PC Keith Palmer, a member of our parliamentary and diplomatic protection command,” Mr Rowley said.

“Keith, aged 48, had 15 years service and was a husband and father.

“He was someone who left for work today expecting to return home at the end of his shift and he had every right to expect that to happen.

“Whilst today is an incredibly sad and sombre day, especially for the MPS and everyone affected, it is only right that I mention the pride I feel in the swift and brave response from our officers – especially those who without fear for their own safety had to confront the terrorist.”