He initially burst onto the scene at Charlton Athletic in the early 2000s and his performances reached new levels last term when he was named Footballer of the Year by the Football Writers Association, even though West Ham United were relegated.
"Things have gone really well for me over the last few years, especially over the last year," he told the Spurs website.
"I’ve broken into the England team and last season, although we eventually got relegated, on a personal level I played some of the best football I’ve played.
"My main target is always to keep fit and then to try and force my way into the team here, try to stay in there and help the team as much as I can.
"I hope my qualities, which might be different to other players here, can bring something different to the team and add to it, that we can move up the league and have a good season."