Milford Haven Maritime Rescue Coordination Centre was alerted at just before six o'clock by a member of the public who was with the man when he fell. They immediately sent Coastguard Rescue teams from Gwbert and New Quay, the RNLI Lifeboat from New Quay and the RAF rescue helicopter from Chivenor to the scene.
On arrival they found that the man was very close to the incoming tide so he was lifted into the lifeboat and winched from there to the helicopter. He was then taken to hospital in Haverfordwest.
It's believed that the man had been out fishing and was walking to his car when he slipped five metres to the base of the cliff. He suffered serious head injuries.
Mike Rogers Milford Haven Coastguard Watch Manager said:
"This was a complicated rescue because the tide was rapidly coming in. I'd like to thank the member of the public, that reported the incident, for his assistance and the teams for their rapid response to this unfortunate accident.