A KILLER celebrated like he had won an “Olympic medal” and fist-bumped pals after beating a clubber to death in front of his horrified girlfriend.

Anthony Condron, 29, was subjected to “unprovoked and senseless” attack by Paul Byrne, 23, outside Maya nightclub in Liverpool, England, The Sun reports.

He was punched twice, once in the jaw and once in the neck, in front of girlfriend Jemma Owes, 25, and died before he could be taken to hospital, on February 3.

CCTV showed thug Byrne re-enacting his punch and kick on the way to another bar with his pals, mere hours after the attack, the Liverpool Echo reports.

Byrne mimicked his thuggish behaviour and his friends were captured laughing and “fist-bumping” while friend Joseph Booth hugged him.

A court heard how they were celebrating and Byrne was “feted by them like he had just won an Olympic medal”.

Byrne admitted manslaughter and is due to be sentenced next month. Booth and Jamie Addison, both 23, were acquitted of the same charge.

Bragging messages exchanged between Byrne and his mates show them joking about the night.

Booth was convicted of attacking Anthony’s friend Barry Goffett during the same altercation.

On a Whatsapp group he writes: “Liam hahahaha I got flopped after dropping some kid hahahahaha”.

He later writes: “Had a glass jaw like Amir Khan as well.”

But after back and forth exchanges about their night out — the group’s bravado quickly turns to panic when Byrne informs Booth that someone died outside the nightclub.

He writes: “Our Jays just text me about maya. One of the lads has died.”

The pals then exchange a number of short phone calls when the news of Anthony’s death trickles through.

Booth was later sentenced to 16 months in prison and ordered to pay £1000 ($AU1750) in compensation to Mr Goffett who suffered a broken leg when he was knocked to the ground.

Booth bumped into Mr Goffett after Byrne struck Anthony.

He punched his victim in the face, but later argued he acted in self-defence, claiming that Mr Goffett had made as if to hit him.

Prosecutors claimed that Booth started the fatal altercation after witnesses spotted a “scruffy” man pushing someone twice before hiding.

Speaking during the trial, John McDermott QC prosecuting, accused both Booth and Byrne of showing no remorse for their violence.

He told Liverpool Crown Court: “The incident which left one man dead or dying and another unable to walk appeared to leave no mark on their consciences.”

While Judge Clement Goldstone said Booth had showed an attitude of “triumphalism” which was “beyond the pale”.

Anthony, a passionate Everton fan, was described as “beautiful, kind and infinitely, irreplaceably special” by his devastated girlfriend, Jemma.

In a heartfelt tribute, she told the Echo: “I’ll never be able to put into words how terrifying and empty the prospect of a life without Anthony now is — but I know I’m going to do him proud and carry on living the way he showed us all how.”

More than 500 people attended in funeral in Liverpool in March, and a fundraising page to pay for the send off raised more than £17,000 ($AU29,700) from hundreds of loved ones and supporters.

Paying tribute online, his heartbroken mum Barbara wrote: “Anthony was one in a million dollars, you only had to look at him to see that.”