A cyclist has been left with a critical head injury after a collision with a pedestrian.

At 2.25pm on Saturday (31 May) the 54-year old local woman was cycling in Madeira Drive when she collided with a 33-year old woman pedestrian from Hertfordshire and sustained a serious head injury.

The cyclist was taken to the Royal Sussex County Hospital and later transferred to Hurstwood Park Hospital where she is currently in a critical condition.

It is understood the cyclist was riding in the cycle lane.

The pedestrian received minor injuries and did not require hospital treatment.

Anyone who saw what happened is asked to contact Sussex Police via 101 or email collision.appeal@sussex.pnn.police.uk quoting Operation Omega.