The Bradford man who won tickets for the clubbing night out where student David Plunkett vanished told today of the last time he saw his best friend.

Michael Vittis, said: "We were dancing one minute, the next it all went fuzzy. I don't know what happened."

Choking with emotion, he added: "I just want my best friend back."

Mr Vittis, 21, of Wibsey, and David also 21 - friends for ten years - had been separated once before earlier in the night at the Budweiser event in Manchester last Saturday night but managed to reunite after David sent him a text saying: "Where are you?"

Greater Manchester Police are now examining Mr Vittis's mobile phone for clues.

They got back together and had another drink and a dance but after about 11.30pm Mr Vittis has no memory of the later events and never saw David again.

Police have since said David was ejected by security men for being sick.

His last contact with his parents, Anne and Michael, was in a harrowing mobile phone call during which he was screaming at about 1.15am on Sunday.

Mr Vittis, who is a barman at Leeds Metropolitan University where David is also a student, said today: "David is my best friend. He is clever and makes friends with everyone. We share everything.

"He is my best mate and this is so surreal. Time has stood still this week.

"I keep trying to remember anything which might help to find him. I just wish I had never won the tickets. We only went because it was such a big event."

The pals were educated together at Buttershaw Middle and Upper schools.

Mr Vittis revealed that David, nicknamed "Chunk", does not drink lager but went along for the quality music line-up at the Manchester event.

He had completed a Saturday shift at Tesco in Buttershaw before they set out.

They boarded a coach in Leeds together and should have returned together but David never showed up.

He added: "I have never really seen him be sick. I have never even seen him paralytic. He is sensible.

"He is not a nutter. If people knew one of us was missing they would assume it was me, not him.

"We had a few drinks, David was drinking wine and we went for something to eat. Because it was big we had even arranged a meeting point if we got separated. I wish we had made it."

Mr Vittis has now given police a drugs test because he is so convinced they were given something or their drinks were spiked.

"I have never suffered such bad memory loss. It all went fuzzy really quickly then blank. I have vague recollections of it all. But everything I know is what other people have told me happened.

"I can't believe it was just alcohol. I have never felt like that before. I gave the blood because I wanted to know if there was anything in it."

He recalled the moments prior to them splitting up.

"Earlier on we had lost each once before. He sent me a text saying 'where are you?' I looked up and saw him coming towards me.

"We had another drink and a dance and after that I can't remember a thing.

"I keep trying to remember - but I can't. The next thing I was at home in bed and Mrs Plunkett was telling me David hadn't come home.

"But even then I went back to sleep because I thought he would get home some time."

Mr Vittis cannot remember calling David's parents at their home in Shelf telling them they had become separated.

Throughout this week he has returned to the scene close to the Daytona racetrack on the Trafford Industrial Park to help with the search.

On Wednesday more than 20 of his friends from Bradford and Leeds, where David is a student, drove to Manchester to help with the search.

Today was Mr Vittis's first away from the scene. He said: "We have all been together looking for David and that has kept us all going. He has loads of friends and we are all devastated.

"Now we are back and on our own it will hit us. You try not to think the worst but his phone number at home is easy to remember and I hope he is turns out to be OK, wherever he is."

David's parents appeared on national television today to make an emotional appeal for his safe return. Mr and Mrs Plunkett were interviewed on GMTV at the Daytona racetrack in Manchester.