The chef uses surveillance to find out which restaurants desperately need his help. Plus: the search for the truth in The Copenhagen Test. Here’s what to watch this evening The chef uses surveillance to find out which restaurants desperately need his help. Plus: the search for the truth in The Copenhagen Test. Here’s what to watch this evening 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