It's Tamsin Riley v The Invisible Woman.

Spoiler: Tamsin Riley loses and gets gunged. Your host welcomes you to "Just Desserts," a gameshow where contestants can seek to get their opponent gunged... but which girl will end up receiving their Just Desserts!

In this show Tamsin Riley takes on the Invisible Woman and after they outline why they want to give their opponent her "Just Desserts," we play games to determine who gets gunged. In this case a card game and a quiz are played. Tamsin, replete in gameshow t-shirt and black cycle shorts, is no match for the Invisible Woman and so it's the Invisible Woman who is allowed to get her own back, and Tamsin who must take a trip to the tank, and receives her "Just Desserts"