Most TV viewers use a laptop, tablet or smartphones whilst watching, new research from broadbandchoices.co.uk has revealed today.
More than two-thirds of TV viewers admit they have a 'second screening' habit.
A survey of 2,000 people found that 70% look at a second screen while they're watching television. The most common is a laptop, which 36% said they use in front of the TV.
Other second screens include smartphones (31%), tablets (15%) and e-readers (5%), while 30% give the television their full, undivided attention. However, 26% watch less TV on their television than they used to.
Dominic Baliszewski, telecoms expert at broadbandchoices, said: "It's not surprising that the old-fashioned television is going to lose its crown as king of the living room."
He added: "With so many different ways for people to view films and programmes over a broadband connection, modern devices such as tablets allow viewers far more flexibility to choose where and when they watch their favourite shows.
"We could see the ordinary TV set replaced in most homes as the primary viewing device in less than five years."
Recent statistics from Ofcom, the UK's communications regulator, show daily TV viewing among 25 to 34-year-olds has fallen to an average of 3.2 hours in the past few years.
At the same time, over a third of households with a broadband connection watch TV online, with a catch-up or on-demand service like Netflix or BBC iPlayer. One in five adults says they now watch catch-up TV at least once a week.