John Kirkland and family
Derbyshire-based construction, engineering and development group Bowmer & Kirkland was founded in 1923 by joiner Alfred Bowmer and Robert Kirkland, a bricklayer. His grandson John, 79, has been chairman since 1976. The company’s profits rose from £27.1m to £39.1m on £848.2m sales in the year to August 2015. With £320.8m net assets the business is easily worth £400m. Other wealth takes the Kirklands to £425m.