close
Sir John Mactaggart and family
Property
Rank 2017
42
Worth
£165m
Rise/fall
£10m
Mactaggart Heritable, the London-based property group, owns a string of high-priced commercial developments. The two main businesses in the restructured operation showed £28.2m profit in 2015 when net assets hit £154m. The company’s roots go back to baronet Mactaggart’s Glaswegian great-grandfather, John, a treasurer of the Labour Party under Keir Hardie. We add £11m for past dividends to owner Mactaggart, 66, and his family, taking them to £165m. His Glasgow-born sister, Fiona, 63, stood down as Labour MP for Slough last month after the June 8 general election was called.