Former Kasabian singer Tom Meighan has pleaded guilty to assaulting his former fiancee.
The 39-year-old admitted at Leicester Magistrates’ Court attacking Vikki Ager on the evening of 9 April.
The court heard a child had witnessed the assault and contacted 999 to report that a “domestic incident was taking place”.
Meighan was given an 18-month community order and told to carry out 200 hours of unpaid work.
He will also be required to complete five days of rehabilitation, and was ordered to pay a £90 victim surcharge and £85 in prosecution costs.
No restraining order has been imposed.
On Monday, the group announced Meighan had stepped down from the band in order to deal with “personal issues”.
The court heard Ms Ager hit her head on a hamster cage after being thrown across the room.
Moments later, while she was in a chair, the defendant grabbed her leg, struck her on the head and threatened to hit her with a wooden pallet.
The court was told Meighan “smelt heavily of intoxicants” as he assaulted her.
Prosecutor Naeem Valli said the “sustained assault” had left Ms Ager with bruises to her knees, elbow, ankle and “a reddening around her neck”.
Meighan, of Narborough, originally denied an assault had taken place but after watching video footage, he told police he could not watch it any further because it was “horrible”.
Mr Valli told the hearing the child “sounded panicked and afraid” while making the call and the victim could be heard saying “get off me, get off me”.
He added officers described Ms Ager as being “visibly upset” while Meighan was said to be acting “aggressive” and unwilling to co-operate.
As CCTV of the attack was shown in court, Meighan wiped his eyes with a tissue and held his head in his hands.
Defending, Michelle Healey QC said Meighan felt “deep remorse” and a sense of “personal humiliation – but he has nobody but himself to blame”.
She added he had faced a “battle with alcohol” and that “to lose the opportunity to perform with the band he loves and people he loves is a huge personal loss”.
Sentencing, district judge Nick Watson said: “I need to take account of the fact that not only did you hurt Ms Ager, you also let down many people – band members and those who love your music.
“They will be shocked about what you did that night.”
He added: “Ms Ager has not made a statement to police and does not appear to support this prosecution.
“Of course, that choice does not mean I should treat this offence any less seriously.”
Kasabian formed in 1997 and reached the UK charts with their third single Club Foot in 2004. Major success came with albums Empire in 2006 and West Ryder Pauper Lunatic Asylum in 2009, which featured a string of hits including Underdog and Fire.
Meighan’s departure leaves guitarist Serge Pizzorno and bassist Chris Edwards as the only remaining founding members.