Twitter users are often sending tweets late at night

Avid social networkers are missing out on nookie while they burn the midnight oil on their smartphones instead.

A massive 46% of UK adults surf the web in bed for 90 minutes every night and 15% say it has led to less sex, the research poll for comparison website found.

Dedicated surfer Debbie Fox, 28, from Essex, said: “I often work late and by the time I’ve got home and had dinner it’s too late to call my friends.

“I always end up taking my laptop and phone to bed with me instead.”

The trend has pushed back the average time Brits fall asleep from 10.30pm to midnight.

It adds up to seven-and-a-half hours less sleep during a working week than 10 years ago.’s Dominic Baliszewski said: “We’re not surprised people are turning on for the night, rather than turning in.

“With so much entertainment available and so many devices with which to enjoy it, people are using every minute to get online.”

Two-thirds of under-30s tweet and update Facebook from their beds.