England prop Kyle Sinckler will leave Harlequins at the end of the season to join Bristol Bears on a two-year-deal.
Sinckler, who played in all three British & Irish Lions Tests during the 2017 tour of New Zealand, will look to add to his 31 England caps during the Six Nations after being a key part of Eddie Jones' side during last year's World Cup.
The 26-year-old has played his club rugby for Harlequins for the entirety of his career to date, making 146 appearances for the London side. However, the opportunity to join an "ambitious" Bristol side was one Sinckler could not resist.
"The opportunity to come to Bristol and play under Pat Lam was one that I couldn't turn down," Sinckler said on confirming his move.
"The Bears are an ambitious club on the up and it was great to visit the city and the facilities that they have. There's a clear plan in place for long-term success and I'm looking forward to contributing.
"I'm grateful to Harlequins for everything they have done for me and my career. I'd like to thank the coaches, fans and my teammates for all their support over the years."
Bristol's director of rugby Pat Lam added: "Kyle is an outstanding player and it's fantastic to bring someone of his international calibre to the Bears.
"He's coming into his peak years as a front rower and has a wealth of experience at the very highest level. What really pleases us is Kyle's attitude; he's excited about coming to Bristol and being part of our journey.
"A key part of our vision is developing our homegrown contingent to become England internationals. Kyle can set the example of what it takes for a young player to succeed at the highest level.
"With John Afoa committing for another season and Kyle coming onboard for two, it'll strengthen the depth of such a key position with two world class players as we plan to fulfill our Champions Cup ambitions."
Bristol and Harlequins are currently level on 22 points in the Gallagher Premiership, with the Bears edging out their rivals by virtue of points difference as things stand.