More than one in five (22%) said they stayed in every Saturday night and over a third (34%) said they liked to stay in because they needed to relax.
More than 14% said they did not want to miss their favourite television shows.
Almost one out of five of those quizzed (17%) said they did not go out at all in a typical week while 33% said they had an average of one night out a week.
Saturday was the most popular night to go out, chosen by 43%, followed by Friday (33%).
Going for a meal was the most popular way to spend an evening out, chosen by 39%, while 20% chose going to the pub.
Around one in ten (11%) would most like to go the cinema, while 9% chose a theatre trip, one in 20 (5%) would like to watch sport and another 5% favoured going to a nightclub.
More than six out of ten people in London (62%) said they did not have a hangover in a typical week but 20% said they had a hangover once a week and 8% confessed to being hung over more than four times a week.
Lloyd Price, a spokesman for Badoo.com, which carried out the study, commented: “Londoners have a reputation for always being out having a good time but our survey shows that perhaps people aren’t as sociable as we might think.
“Money worries are certainly having an impact but it’s clear that people would welcome new ways to meet like-minded people to improve their social life.”