The allegations about Gregg Wallace’s behaviour on set have been described as being part of a "toxic environment". Once primarily used in the domain of plants, arrows and chemicals, “toxic” - which is defined as “poisonous” – only relatively recently started being applied to workplaces and people: parents, siblings, neighbours, exes and co-workers.

Those who have experienced a toxic work culture or colleague might describe a deterioration in their personal and professional well-being – the causes of which may be difficult to define – or prove – on their own. While sexual harassment, racism, and bullying should be clearly understood, a toxic environment may involve more subtle things at play: a lack of trust, favouritism, unrealistic expectations or an atmosphere of negativity.

But what are we to make of a concept which hinges on how an aggrieved person feels rather than the defined behaviour of the perpetrator? Is it an important redress for those who have for too long suffered in silence – or an over-compensation which irredeemably labels the wrongdoers? What should – and shouldn’t – we be prepared to accept in a workplace or in a relationship? If a boss sets a negative tone in an office, due to their own pressures and stresses, does that make them “toxic”? When does an off-colour joke become “toxic”? Is it possible to detoxify cultures like the entertainment industry, which thrives on the egos of the “talent”? And when is it OK to cut off a “toxic” relative?

Chair: Michael Buerk Panel: Sonia Sodha, Konstantin Kisin, Matthew Taylor and Anne McElvoy Witnesses: Ben Askins, Joanna Williams, Becca Bland and Donald Robertson.

Producer: Dan Tierney Assistant producer: Ruth Purser Editor: Tim Pemberton