Why the UK’s ninth richest man John Fredriksen moved his business out of London this year

The oil tanker magnate, whose wealth was estimated at around £13.7 billon in this year’s Sunday Times Rich List, is just one in a series of wealthy foreign-born London residents who are quitting the UK – or at least loosening their links – because of Labour’s scrapping of the non-dom tax regime and their disillusion with Britain’s poor economic prospects.