Gordon Ramsay’s Secret Service
10pm, Channel 4
In a series first shown in the US last year, chef Ramsay is back with his brand of brutal home truths on how to save struggling restaurants. This time, he is using surveillance to secretly gather intel on what’s going wrong before bulldozing in. He starts at a family-run Greek place in Washington DC, where the hygiene standards are said to be seriously lacking. Hollie Richardson
