Harlequins have confirmed a contract extension for loosehead prop Mark Lambert.
Lambert joined Harlequins ahead of the 2003/4 season and has since gone on to make 239 senior appearances, making him one of the most decorated players in the Club's history.
He was part of the squad that went 14 matches unbeaten on their way to an Aviva Premiership title victory in 2012 and was named on the bench in the Final against Leicester Tigers at Twickenham Stadium. He then started in the successful LV= Cup Final against Sale Sharks the following year.
Lambert made his 200th appearance for Quins in the 2016/17 season; one of only four players in the current squad to achieve that number, alongside Mike Brown, Chris Robshaw and Danny Care.
A former England U19 and U21 representative, the front row was also called up for the England Saxons during the 2009 Churchill Cup.
Off the field, Lambert serves as an ambassador for both the Harlequins Foundation and humanitarian organisation, Future Hope, and was named Community Player of the Season at the 2017/18 Premiership Rugby Awards for his outstanding contribution in the charity sector.
He is also the RPA Chairman and has held that role since 2017 ensuring player welfare is central to every decision across the current rugby landscape. He has been integral to key decisions around the provision of in-season rest weeks and the existing domestic season structure.
Head of Rugby Paul Gustard said: "Lamby has been a phenomenal servant to Harlequins during his 16-year tenure at the Club, and we are delighted that he has signed for another season. He is a bear of a man, is bright and has a real feel for the game.
"He is first and foremost a Harlequin through and through and he adds a lot to the group. He was one of our stand-out performers in pre-season last year and unfortunately, we weren't able to select him as much as I would have liked. I am however delighted that in keeping with our philosophy we have found a way where the big guy can compete and put his best foot forward this season.
"He is and will remain an important figure as we continue to grow as a group in 2019/20."
Mark Lambert added: "Harlequins has been a huge part of my life and that of my family for the best part of two decades now.
"I feel a huge sense of pride every time I pull on the Quins jersey and I love being part of a team of players who share great challenges and incredible experiences together. That is what rugby is about for me and these things will motivate me as much in my 17th professional season as they did in my first."