William Walker MVO (1869–1918) was an English diver famous for shoring up the southern and eastern sides of Winchester Cathedral.

Before his work, the cathedral had been in imminent danger of collapse as it sank slowly into the ground, which consisted of peat.

So, to give temporary support to the foundation walls, some 235 pits were dug along the southern and eastern sides of the building, each about six metres deep.

During the latter part of his time working at Winchester, Walker cycled home, 70 miles to South Norwood, at weekends returning by train on the Monday.

[2] To celebrate the completion of the work, a thanksgiving service, led by the Archbishop of Canterbury, was held on 15 July 1912.

Other aspects of his work: Part of the interview article: "In cold water diving he [William] explained what a man has to contend with is the pressure".

Walker died during the Spanish flu epidemic of 1918 and is buried in Beckenham Crematorium and Cemetery, London.

A small statue of Walker is displayed in the Cathedral, near the shrine of St Swithun and the remains of King Canute.