Macaulay Culkin Spotted in London, Mistaken for a Homeless Beggar and Getting Physical with the Paparazzi [PHOTOS]

Two English lads on a night out in London ran into Macaulay Culkin but the "Home Alone" star was initially mistaken for a homeless beggar. The 32-year-old actor flew all the way to London for a couple of surprise appearances as Adam Green's special gig guest.

Marley Spindler was with his friend Drew when they came across Macaulay Culkin on the London streets at 2:30 a.m. "I didn't recognise him at first. I thought it was some homeless guy who was scrounging a smoke," Spindler shared.

"We had a brief chat with him and his accent was American. It was only then that Drew asked him if he was Macaulay Culkin. Even then I wasn't convinced. I'm no expert but he didn't seem all there," Spindler further added. Then, Marley Spindler was able to take a picture of Macaulay Culkin with his friend and shared the image on the social networking site Twitter.

"He said he was in London seeing friends though he was vacant, speaking very quietly and mellow. He looked spaced out. You would never have thought it was the same person who appeared in Home Alone," he added.

Macaulay Culkin has been performing a "Beach Boys" cover on-stage with musician friends where he surprised the audience with his come-back appearance. Several people failed to recognize the once famous child actor.

Macaulay's stay in London has been made an unpleasant one when the actor got very physical with the paparazzi just outside of The Haunt night club in Brighton. The former child star was spotted quietly leaving the club in the early morning hours of Tuesday until the paparazzi enraged him.

According to an unnamed eyewitness, Macaulay Culkin attacked a photographer while cursing and screaming the words "Go to hell." The reason why Macaulay got physical with the paparazzi is still unclear.

Previous reports claim that the troubled Macaulay Culkin has been very dependent with dangerous drugs which caused the transformation of the angelic-looking child actor into an unrecognizable skinny and ill-looking Hollywood star. However, Macaulay's publicist denied those claims.