The return of the programme following workers at one of the UK's biggest water companies, with a team tackling blocked toilets on match day at Blackburn Rovers' ground.With kick-off only a few hours away, Stu and Ian head into the sewer to break up and suck out the mass of fat, grease and unflushables clogging the pipework.

In Cumbria, John and his army of engineers are midway through a mammoth plumbing job, replacing parts of an ageing monster underground pipeline.