Tom Hayes used to be a trader with the investment banks Citigroup and UBS based in London. 

He was found guilty in 2015 of manipulating the key LIBOR interest rate -- something he always vehemently denied.

But this week - after serving 5 years in jail - he appears before the top court in the UK hoping to overturn that conviction and clear his name.

Andrew Verity, correspondent with the BBC and author of book this case called ‘Rigged,’ joins Joe Lynam to go through the latest on this case.