It’s too murky to distinguish one stiff upper lip from another in Callum Burn’s drama about a real-life mission that came unstuck Based loosely on a true story, this British first world war drama deploys a few cunning stratagems to keep the budget down – starting with setting almost the entire story inside a tank; this one is nicknamed the Fray Bentos after the popular tinned pie. In addition, whenever the British soldier characters venture outside this extremely confined space, it’s almost alwa