A woman will be sentenced today for slashing the neck of the daughter of Ground Force star Tommy Walsh.
Leanne Bloomfield, 28, denied using a shard of glass to cut Natalie Walsh, 22, upwards from her neck to her chin at Cafe De Paris near Leicester Square in central London.
But a jury found the mother-of-two guilty of wounding with intent following a four-day trial last month.
She is due to be sentenced at Southwark Crown Court in London after Judge Peter Susman QC told Bloomfield he had "no choice but to impose a prison sentence".
Mr Walsh, who was in court to hear the verdict with his wife and son, condemned the defendant's "laddish" behaviour during the assault on February 3 last year.
The celebrity builder, who rose to fame on BBC show Ground Force with Alan Titchmarsh and Charlie Dimmock, said he was "satisfied" with the jury's decision.
Speaking after the verdict, he said: "There are no winners in this.
"The only winner is justice has been seen to be done.
"It was really tough but we are a really close-knit family.
"We can move on. We've no interest in what happens from here."
Mr Walsh said Bloomfield "didn't appear remorseful or contrite" following the attack.
"She has two children. You should think about your behaviour before you go and behave drunkenly or laddishly," he added.
Mr Walsh said his daughter had achieved a first in her medicine degree at Kings University in central London despite deferring her final exams after the attack.
Bloomfield, of Highwoods, in Colchester, Essex, broke down in tears after the verdict and continued to protest her innocence to the jury.
She was granted bail by Judge Susman who told her to make arrangements for her children's welfare.