The ex 'Dancing on Ice' contestant was pictured cosying up to the Aussie businessman - who is worth an estimated £66m - as they strolled around London's Covent Garden, and dined at Japanese restaurant Flesh and Buns.
The pair were set up by a mutual friend, and Richard later told The Mirror that they'd 'had a good time'.
“It turns out that we have a lot of mutual friends together, so we arranged a date to meet. It was set up by someone who knows her, who I do business with," he said.
“We had fun, we’re both single. She’s single, and I’ve been split from my ex-girlfriend Camilla for the last five years, so why not meet?
“We only met that one time and there’s no date in the diary yet to meet again, but who knows? We had a good time. She’s a lovely lady.”
Anthea split from Grant, her husband of 13 years, back in June and said at the time: "I can confirm we have separated, I need time to consider my immediate plans and will be making no further comment at this time."
The couple initially split up last year after Anthea reportedly discovered Grant had an affair while she was filming in Canada.
They got back together and appeared to have put their rocky patch behind them, with Anthea later claiming it was 'her fault' that Grant had slept with another woman.
In an interview with the Sunday Mirror, she said: "At the beginning, when I found out about Grant's friendship, let's call it, with another woman, I was like a rabbit in the headlights. I didn't know what to do."
"Grant's business problems and eventual bankruptcy inevitably had an impact on our marriage. But my decision to pursue my career in Canada doesn't look so sensible now.
"Long periods apart are never good for a healthy relationship. But then we're all fallible. We all make mistakes," she said.
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Brad Pitt has always denied cheating on Jennifer Aniston, but he was heavily rumoured to have been hooking up with Angelina Jolie while they filmed 'Mr and Mrs Smith' together.
It was the affair that rocked Hollywood - director Rupert Sanders did the dirty on his model wife Liberty Ross and broke up one of the most solid couples in celebville in the process when he had a secret liaison with Kristen Stewart.
Gareth Gates was alleged to have been conducting an affair with his young 'Les Miserables' co-star Katie Hall, while his wife Suzanne was at home looking after their young child.
Chelsea footballer John Terry lost the England captaincy after it emerged he'd cheated on his wife Toni with the partner of his former team-mate Wayne Bridge.
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