A child and a man in his seventies were among those seriously injured in a two car collision on Friday evening.
The child was treated for head injuries and the pensioner was taken to hospital with back and chest pain after the collision which caused traffic to tailback for miles in the St Helier Avenue area of Morden.
Two car crash near St Helier Avenue in Morden causes traffic tailbacks
Ambulance crews treated four people - two women reported to be in their 60s for chest injuries, a child for head injuries and a man reported to be in his 70s for back and chest pain.
A passer-by said it looked like a car had mounted the pavement and hit the fence by the lodge house in St Helier Avenue by Morden Hall Park.
Police were called to the junction of Central Road and Bayham Road in Morden at 5.35pm on Friday when two cars collided.
A London Ambulance Service spokeswoman said they sent a number of resources to the scene including an ambulance crew and duty manager.
Traffic is said to have built up along St Helier Avenue and as far as south Wimbledon as the emergency services dealt with the collision.
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