Dennis, a regular on Mock The Week, has been starring with Skinner on Outnumbered since its first series in 2007. Both actors have been single since 2015.
They were last seen together on-screen in the 2016 Christmas Special and while no new series has been announced, Dennis has previously suggested another special would be likely in future. The semi-improvised BBC1 show ran for five seasons between 2007 and 2014.
Skinner and Dennis played Pete and Sue Brockman, parents to three unruly kids, Jake, Ben and Karen (Tyger Drew-Honey, Daniel Roche and Ramona Marquez).