Food will be central to the pomp and ceremony of festivities this weekend, with over 16,000 street parties and 70,000 Big Lunches set to take place across the UK; a further 600 are planned in over 70 countries from the Commonwealth and rest of the world.

Charlie Chaplin is perhaps best remembered for playing his slapstick comedy character The Tramp, the man with the moustache, bowler hat, baggy trousers and walking cane.

Henrietta’s story is ethically problematic because her cells were harvested without her knowledge or consent, or that of her family.