Police are asking the public for help after a man was punched in the face and kicked after boarding a tram. PC Thomas Feron, of Nottinghamshire Police, said: “This was a despicable attack on a man just trying to help the tram driver. “This sort of violence will not be tolerated on our tram network and we are working hard to trace those responsible. “As part of our inquiries we have now released images of four youths we believe could help us with our investigation. Anyone who can assist should call Nottinghamshire Police on 101, quoting crime occurrence 26000357561, or Crimestoppers anonymously on 0800 555 111.