LONDON (REUTERS) - Twenty-one of those injured in Saturday's London Bridge attack are in a critical condition, the Press Association news agency reported on Sunday citing NHS England, the health authority.

Separately, Metropolitan Police Assistant Commissioner Mark Rowley said 36 people in total were being treated in hospital for wounds sustained in Saturday night's attack.

Earlier, the London Ambulance Service said 48 people had been taken to hospital after suffering injuries in the attack, which left seven people dead.