For the next two weeks, they're trialling what's being billed as the UK's first interactive virtual grocery store in the departure lounge at Gatwick Airport.

BBC: Tesco try out virtual grocery shopping at Gatwick Airport

However, passengers will continue to be able to buy perfumes, cosmetics, bottles of alcohol and other drinks in the departure lounge after passing through airport security.

BBC: A transparent bag containing toiletries

Fortunately, we flew with a Spanish charter airline based in Palma and our flight left for London on time, but hundreds of others were sleeping on the floor in the departure lounge, waiting for cancelled or delayed flights home.

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So I sat, increasingly thirsty, in the dusty departure lounge cursing the fact there were no fans to ease the heat.

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The community of air travelers would likely agree that sitting in a departure lounge at Newark Airport may be livable, but it's not sustainable.

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