A doctor was left battered and bleeding after being set upon by a man armed with “metal piping” outside Hampstead Heath station.

The 49-year-old victim was struck on the back of the head and fell to the ground in Heath Hurst Road on November 10 at 7.15am.

He was ordered to hand over his cash and his phone before the assailant made off towards the station.

The victim walked bleeding to a nearby shop and called police.

He went to the Royal Free Hospital in Hampstead where he was treated for cuts to his forehead and the back of his head.

Police are investigating but no arrests have yet been made.

Det Con Chris Turner, from Camden Police’s robbery squad, said: “This was an unprovoked attack on a man going about his normal business in Hampstead. We are thoroughly investigating this robbery, looking at various intelligence information and speaking with the local Safer Neighbourhoods Team.

“We ask that any witnesses come forward and speak with police.”

n Anyone with information should call Camden Police on 101 or Crimestoppers anonymously on 0800 555 111.