London, Nov 27 (ANI): Harry Potter star Josh Herdman was thrown out of his hotel following a drunken romp in public with a half-naked blonde.

The 22-year-old Herdman, who plays bully Gregory Goyle in the Harry Potter flicks, had earlier turned up dead drunk at a convention mouthing a volley of expletives.

Paramedics had to attend him at the end of a 48-hour rampage.

Herdman had been paid to appear at the Collectormania convention in Copenhagen.

However, he doused in booze, much to the horror of the organisers.

“Herdman was an utter disgrace,” the Sun quoted an insider attending the event, as saying.

“He was out of his skull when he arrived and his behaviour got worse. Lots of kids came to see him.

“He was meant to meet them with a smile and sign autographs. But they were greeted by a scowling, offensive, foul-mouthed drunk.”

Herdman sparked off a row at the Korsgladehallen convention venue on Saturday after he alleged showered abuses on locals.

Organisers managed to smuggle him out and he was later dropped fom the event’s second day.

However, Herdman’s alcohol spree continued unabated at Hotel Kong Frederik.

“He came into reception and started screaming abuse at Collectormania’s organisers,” said an eyewitness.

“At one point he screamed, ‘I am a regular cast member in the biggest movie franchise in cinema history and you will NOT speak to me like that!’

“He kept kicking off in the hotel all evening.”

Early Su8nday morning a cleaner heard moans from a basement foyer only to find Herdman romping with a half-naked blonde.

Soon, the security men arrived and asked the duo to leave.

Herdman left the place in a rage to get more booze and caused more fracas on his return.

A source from the hotel said: “Staff tried to get him to check out but he started crying for an ambulance, saying he was going to die.

“He finally collapsed in the toilet with his trousers round his ankles.

“When staff tried to get him to move he started screaming and bolted into the café next door.

“Police and an ambulance were called because he was clearly out of control.”

Thereafter, Herdman treated him at the hotel after which police asked him to settle his bill and leave.

The actor later told his friend that his fear of flying had kicked off the binge and that he is now “mortified” by his behaviour. (ANI)