Airport bosses have been slammed for failing to provide free Wi-Fi.

It comes after a new survey revealed that only four out of the 25 British airports allow customers to access unlimited Wi-Fi for free.

Nick Trend, who is consumer editor at The Daily Telegraph, is one of many people to be perplexed as why this figure was so low.

Writing for telegraph.co.uk, he said: “If McDonalds and Starbucks can offer free Wi-Fi to their customers, who might spend just £2 or less on a coffee, why can’t airports do the same?

“Passengers are already paying to use the airport when they buy a flight ticket and then pay over the odds for food and drinks while they are there. Having to pay again to check your email will leave them feeling understandably frustrated.”

His views are likely to be echoed by many Britons who are becoming increasingly used to be able to find free Wi-Fi when out in public.

According to travelbite.co.uk, 11 British airports provide free Wi-Fi for a limited amount of time, but only Aberdeen, Birmingham, Edinburgh and London City let passengers log on to their wireless networks for as long as they like without charge.     

Cardiff, Leeds and Luton airports charge visitors the most to get online (£5 per hour).