With Keir Starmer recently forced to promise his Chancellor, Rachel Reeves, would stay on until the next election, Westminster Insider Host Sascha O'Sullivan talks to former Chancellors and advisors who have worked in No 10 and No 11 Downing Street over the last 30 years to find out how to survive one of the toughest gigs in politics.

She talks to former Chancellor Norman Lamont about the aftermath of the Black Wednesday financial crisis in 1992 and what lead to John Major sacking him less than a year later.

Former advisor to Blair and Brown Theo Bertram tells Sascha the Chancellor-turned-PM Gordon Brown struggled to relinquish control over the Treasury to his new neighbour in No11, Alistair Darling. Sam White, who worked for Darling during his time as Chancellor, explains how an ideological wedge pulled the two apart before and after the 2008 financial crash.

George Osborne, former Chancellor and now host of the Political Currency podcast, explains his unusual closeness with David Cameron through their shared belief in the merits of austerity. But he tells Sascha how their closeness may have risked a form of 'groupthink' during their time in office.

Osborne also sets out why he thinks Rachel Reeves current economic plans have more in common with his economic agenda in the 2010s that people might realise.

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