Former trade negotiator Dmitry Grozoubinski celebrates the "virtually unprecedented result" for Australia in the trade deal with the UK, telling James O'Brien "we've not heard" any benefits for Brits.

Dmitry Grozoubinski, a former diplomat and trade negotiator at the World Trade Organisation, and Shanker Singham from the Institute of Economic Affairs, whose work is often cited by Brexiteer politicians, discuss tariffs.