DRINKERS are increasingly abandoning drunk and vulnerable friends on nights out in Hull's Old Town, says a voluntary group.
Since 2012, Hull Street Angels Trinity have patrolled the Trinity Quarter, from 9.30pm to 2am each weekend, helping ensure revellers get home safely.
Luke Cardwell, the group's volunteer co-ordinator, says he is increasingly concerned about the number of people his patrols are finding alone and drunk.
The group is now preparing to launch its Drink and Friend awareness campaign, with the slogan "Drink but stay together".
Mr Cardwell said: "I've seen up to ten people a night on their own. People are coming out of pubs and clubs and leaving their friends.
"People may be too drunk to get into premises, so their friends are just leaving them outside.
"People need to look out for each other, because when you are drunk you are that much more vulnerable."
Mr Cardwell said his 15-strong team of volunteers, who carry first-aid kits and radios linked to the city council's CCTV operators, will often be called on to help people worse for wear get home.
He said: "There is a danger that if these people are left, they will fall asleep, which carries the risk of hypothermia, or attempt to walk home and end up getting hit by a car.
"We will help people sober up and accompany them to taxi ranks. We will also, if necessary, call their friends, or relatives, to get them to pick that person up."
Mr Cardwell said both male and female groups are guilty of abandoning their friends. He said: "It's a good mix of men and women, and all ages."
On Saturday, Hull Street Angels Trinity was awarded almost £5,000 from the NHS group Hull Clinical Commissioning Group's Healthier Hull fund to help the campaign.