Bakers and medical experts are joining forces for a disease and anatomy-themed cake festival at Queen Mary's University Museum today.
The Eat Your Heart Out exhibition features cakes made to look like body parts.
There will be Gungus Cookies, Polycystic Kidney Cakes, and Anotomical Macaroons.
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A lamp in the tower which houses Big Ben is to be switched off for the first time in more than 70 years.
Sir Bruce entertained audiences for more than seven decades.
Work in the tower will also pause over the bank holiday weekend.