The Sixth Doctor joked that he thought that guns were given away with cereal in the United States of America. (AUDIO: Shield of the Jötunn)
The Thirteenth Doctor stated that she preferred cereal for breakfast. (TV: Arachnids in the UK)
Jackie Tyler had a selection of cereals, including Cornflakes, in 48 Bucknall House in the Powell Estate. (TV: Love & Monsters)