With a disappointingly toothless script by Simon Beaufoy, author of The Full Monty and Slumdog Millionaire, this sub-Ealing (or perhaps inferior Boulting brothers) comedy is a lame, sentimental enterprise. Ewan McGregor plays a shy expert from the Ministry of Agriculture and Fisheries drawn into a lovably eccentric sheikh's plan to introduce Scottish salmon to his desert emirate. Pulling and pushing McGregor are an upper-middle-class PR woman (Emily Blunt), whose SAS boyfriend is missing in action, and the prime minister's foul-mouthed, stop-at-nothing press secretary (Kristin Scott Thomas). If the film were capable of redemption, Scott Thomas, doing a version of Malcolm Tucker/Alastair Campbell in skirts, would be its redeeming feature.