The campaign, which is dubbed Pride and Breadjudice, sees the comedian pitch his idea for a celebration of Warburton’s 141st anniversary, which takes place this year.
He tells chairman of Warburton’s Jonathan Warburton: “You’ve given me an idea for one of those steamy period dramas. Strap yourself in Johnny, you’re gonna love it. It’s an epic tale of passion, flour and a woman stood on an hill.
“Our heroine Ellen dreams of a life dedicated to baking her seeded batch loaf. But her father, he has other ideas…”
We then get to see Kay’s dream realised as he becomes the Mr Darcy-style Thomas Warburton, impressing Ellen with his selection of seeds (Warburton’s is best-known for its multi-seed loaf).
At one point the pair re-enact the famous pottery scene from the film Ghost, but with bread dough and a sprinkling of seeds, and Kay’s famous garlic bread joke even gets dusted off for the occasion.
Despite the comedy, the advert is based on the true story of how the original Warburtons Ellen and Thomas met and founded the bread business 141 years ago.
Kay is the latest face to front a campaign for the company, with previous stars including Sylvester Stallone and Kermit the Frog.
The comedian said he was ‘excited’ for people to see the finished advert.
“I've thoroughly enjoyed the whole experience working with Warburtons in their new commercial and I'm so excited for people to see the final product. It looks and sounds beautiful,” he commented.