The actor, 60, who is arguably best known for playing Grant Mitchell in EastEnders , is one of the famous faces appearing in the new current series of the BBC genealogy show.
It comes after the EastEnders star, 52, blanked Lorraine Kelly in an awkward chat about their former housemate Mickey Rourke, 72, on her show earlier this week.
Actress Hannah, whose sister is former EastEnders star and Strictly winner Kara Tointon , got together with Joe back in 2012, after meeting on the set of the hit E4 drama.
The American singer, 81, took to X to express his delight at featuring in the iconic soap. The left-field crossover comes after the flamboyant hitmaker was spotted in a rare sighting smoking a vape.