TV presenter Gail Porter was attacked after trying to break up a fight between two women outside her home.
The former Top Of The Pops host heard an argument on the street next to her flat in London on Saturday night.
When she went outside in an attempt to defuse the situation she was punched in the face by one of the women.
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The 51-year-old said she had been left with a sore jaw and was shaken up by the incident.
Posting on her Twitter account, Edinburgh-born Gail said: "Please remind me when two women are fighting outside my home don't go out and try and make peace. At home now with a punch to the jaw. Got to love London.
"Just ran out when two girls were killing each other in my street. Managed to break it up but one decided to hit me. Still standing.
"It was two girls off their heads. I just wanted to calm it down as it was upsetting the neighbours. Just wanted to keep the peace.
"Glad I jumped in as it was looking bad. A punch to me was better than what they were doing to each other.
"Totally fine. Bit shaken but all good. It's all sinking in. Blinds down.. may stay a few days indoors.
"I'm Scottish. I can take a sore jaw. Just wish the world was a better place."
Gail, who has hosted TV shows including Children In Need, Fully Booked and Dead Famous, was sent dozens of messages from friends and social media followers wishing her well.
Gillian Broderick posted: "Take my hat off to you for even going out there to help. Most people would have ignored it."
Radio presenter Janice Forsyth posted: "FFS. Hope you're OK."
Al Beaton said: "Glad you're OK, jaw might be tender but you should be proud for doing right thing."
Following a promising start to her TV presenting career, Gail lost all of her hair to alopecia in 2005, and in the ensuing years she has also struggled with mental health and bankruptcy.
She later said work gradually dried up after she was sectioned in 2011 and the situation got so bad she briefly slept on a park bench.
Gail has also battled depression and an eating disorder, and her marriage to Toploader guitarist Dan Hipgrave ended in divorce.
She won a BAFTA Scotland award for her 2020 documentary Being Gail Porter, which centred on her mental health struggles.
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