Why millionaires like Gary Lineker want to pay more tax

120 super-rich people have signed an open letter calling for higher taxes on the richest in society. They say taxing wealth more fairly could help reduce inequality, support public infrastructure and help small businesses. And point out that there are 50 families with more wealth than half of all British people. Critics, though, argue it could drive wealth overseas and damage economic growth. So, what exactly are they proposing? And is there ever likely to be a wealth tax in the UK? Niall Paterson is joined by Julia Davies, a founding member of Patriotic Millionaires UK Have you got a question for Niall? Email the show – why@sky.uk