1 Sir James Dyson and family, household goods and technology, £16.2bn.
=2 Sri and Gopi Hinduja and family, industry and finance, £16bn.
=2 David and Simon Reuben, property and internet, £16bn.
4 Sir Leonard Blavatnik, investment, music and media, £15.78bn.
5 Sir Jim Ratcliffe, Ineos chemical giant, £12.15bn.
6 Kirsten and Jorn Rausing, inheritance and investment, £12.1bn.
7 Alisher Usmanov, mining and investment, £11.68bn.
8 Guy, George and Galen Jr Weston and family, retail, £10.53bn
9 Charlene de Carvalho-Heineken and Michel de Carvalho, inheritance, brewing and banking, £10.3bn.
10 The Duke of Westminster and the Grosvenor family, property, £10.29bn.