Lancelot Clark and family
Rank 2017

Set up in 1825 by two Quaker brothers from Somerset, Clarks is a staple of many British high streets, selling more than 50m pairs of shoes a year. The operation is 84.3% owned by the Clark family – a stake we value at £545m – and Lancelot, the 81-year-old head of the family, holds a 6% share. There were profits of £35m on £1.5bn turnover in 2015-16 when the business showed assets of £648.9m. Clark is an accomplished artist, selling his watercolours on his personal website, and he also established the Soul of Africa charity, which has helped more than 18,000 young people. His son Galahad runs London-based Vivobarefoot, selling healthy "barefoot" shoes with ultrathin soles "inspired by nature, people and movement".