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The film crew's base camp was near Holiday Home Yorkshire in Reeth, whose owner said it was "very exciting" seeing the trailers in the tiny village.

"The scariest thing they've mentioned is going to Everest base camp, which is a two-hour helicopter ride away," the former Preston North End manager and Aston Villa player tells BBC Sport from Kathmandu.

A trip to Everest base camp - used by climbers during their ascent and descent of the world's tallest mountain - will hopefully provide Grayson with at least one lasting memory.

When I was embedded with an infantry company in a small base camp in downtown Mosul, every night there would be a convoy sent from the company to the brigade base camp to pick up the hot meal for the day.

In the TOC, soldiers would be assigned to the convoy; a route from the company base camp to the brigade dining facility would be picked, with plans made for an alternate route if something unexpected came up.