[JMT1985]

They're contracted until 2026 to provide the Christmas special on Christmas Day and a New Year's show.    If the BBC decide to axe it, they still get paid even if they don't make them.

There's also four more episodes in 2023.

Even with it being a BBC programme, with so much product placement, I'm surprised they don't have to have the 'P' icon on prominent display.

Just to add some facts, it is also a sort of co-production with RTE Television, the Irish national broadcaster. RTE are allowed Product Placement in their productions, as RTE is what is known as a "semi state company", receiving advertising, sponsorship and product placement income along with the public Irish licence fee which is currently €160 per year. 

Maybe this is the reason why we see Brennan's Bread sitting in Mrs Brown's kitchen every time.