Sir Martin Sorrell slips down Rich List, JCDecaux owner ranks top in advertising

The Sunday Times has released its UK Rich List giving insight into the rising (or declining) fortunes of the nation's wealthiest people - there have been a handful of moves in the advertising sector worth keeping tracking of including Sir Martin Sorrell, Jean-Francois Decaux and Charles Saatchi.
Those on the Rich List have since 2017, accumulated 10% more wealth than the previous year. Since 2012, the number of UK billionaires doubled from 77 to 145. Furthermore, only 14% of those in t