Choirmaster Gareth Malone stole the nation’s hearts with last year’s Military Wives choir, and now he’s back to unite people in their place of work.

In the new BBC2 series, Gareth sets up choirs with workers at Manchester Airport, Bristol Royal Mail, Severn Trent Water and Lewisham Hospital.

‘I don’t want to make claims to have solved all the problems in the NHS,’ he says. ‘But it was great to bring together people from different levels. Surgeons would normally never hang out with porters, yet in our choir, they found themselves sitting next to them and relying on them because it was often the porter who had the better voice!’

Gareth has also spoken about a boozy night out with the Military Wives in his autobiography, Choir. ‘I was forced to knock back some ghastly iridescent concoction,’ he explains. ‘These women ‘went large’ with a vengeance; I think I had about eight shots, plus a pint of beer because I was feeling all right. Silly man. The wives told me that I might have run with the big boys, but now I was playing with the big girls. Honestly, these women are dangerous, they really are!’

The Choir: Sing While You Work is on BBC2 on Thursday at 9pm.