The TV presenter, who had her mobile phone snatched last Friday in Central London, said that she didn't let the thief get away without a fight and did her best to chase him after he pushed her away.
Roslin, 48, later joked on Twitter that she needed to learn to run faster and used the site to thank members of the public who helped and also the police.
Roslin said: "Thank you to the lovely woman who helped and also the nice young man, but so many men just kept on walking.
"The police were great, but it's a horrid thing to happen. Sympathies with anyone else that it's happened to."
Gaby Roslin presents Children in Need
She later added that her daughter, Amelie, was excited by the ordeal: "The police have been great and my 6 year old think it's very exciting that the police keep calling me!"
A Scotland Yard spokesperson said: "Police are investigating an allegation of robbery that had occurred at approximately 2pm on Friday 11 January in Chandos Street, Central London.
"Inquiries continue and there have been no arrests."
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