Research suggests more than seven million adults in the UK have never used the internet.
Figures released by the Office of National Statistics (ONS) said 43.5 million adults are now online - one million more than this time last year.
But 7.1 million are not making use of the world wide web, with the disabled and elderly still the least likely to log on.
Statistics demonstrated that London has the highest number of internet users at 90%, with Northern Ireland the lowest with 79%.
Graham Walker, chief executive of digital accessibility charity Go On UK, believes the numbers are encouraging but there is still plenty of room for improvement.
He said: "It's not just about access to the internet.
"Sixteen million adults don't have the basic online skills to confidently take advantage of digital tools."
Figures revealed that 99% of 16-24-year-olds use the internet. Those aged 75 or over are still the most disconnected.
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