Smithfield, London - The Market - 20th Century

20th Century

During World War II, a large underground cold store at Smithfield was the theatre of secret experiments led by Max Perutz on pykrete, a mixture of ice and woodpulp, alleged to be tougher than steel. Perutz's work, inspired by Geoffrey Pyke and part of Project Habakkuk, was meant to test the viability of pykrete as a material to construct floating airstrips in the Atlantic to allow refuelling of cargo planes in support of Lord Louis Mountbatten's operations. The experiments were carried out by Perutz and his colleagues in a refrigerated meat locker in a Smithfield Market butcher's basement, behind a protective screen of frozen animal carcasses. These experiments became obsolete with the development of longer range aircraft and the project was soon abandoned.

At the end of World War II, a V-2 rocket struck at the north side of Charterhouse Street, near the junction with Farringdon Road (1945). The explosion caused massive damage to the market buildings, extending into the railway tunnel below, and over 110 casualties.

Horace Jones' original Poultry Market was destroyed by fire in 1958. The Grade II listed replacement building was designed by Sir Thomas Bennett in 1962–1963. It has a reinforced concrete frame, with external cladding of dark blue brick. The main hall is covered by an enormous concrete dome, shaped as an elliptical paraboloid, spanning 225 feet (69 m) by 125 feet (38 m) and only 3 inches (7.6 cm) thick at the centre. The dome is believed to be the largest concrete shell structure ever built in Europe by that time.