A surprise weekend extra edition, because there’s just too much news… Apparently we’re doing a “gradual” tariff-free deal with Australia. What exactly does that mean? Will it really wipe out the Welsh lamb industry and Scottish hill farmers? And have Johnson and Truss given away Britain’s negotiating advantage just for a headline? International trade expert and former negotiator Dmitry Grozoubinski explains how one deal could come back to bite Brexit Britain in painful places.

• “When you look at what Britain has just given away for a modest deal, the precedent is remarkable.”

• “The Americans will be asking, why can’t we have the same very favourable terms as Australia? And the US is a much, much bigger and stronger economy than Australia.”

Presented and produced by Andrew Harrison. Assistant producers Jelena Sofronijevic and Jacob Archbold. Music by Kenny Dickinson. Audio production by Alex Rees. THE BUNKER is a Podmasters Production

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Extra: WHAM, BAM, TANK YOUR LAMB – Australian trade deal with Dmitry Grozoubinski