How worried should the government be about the super rich leaving the UK?
A venture capitalist who has invested £500m in UK science and tech start-ups, Magda Wierzycka, is threatening to take her future investments elsewhere, highlighting the footloose nature of some of London's wealthiest people and challenge to the Treasury in raising tax.
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Sky's Gurpreet Narwan speaks to one of South Africa's richest women, who is reluctantly relocating back home from London after changes to the non-dom tax law.