Talented scrum-half Rees, who has made nine appearances for Wales, and 21-times capped prop Yapp will both make the move from Cardiff Blues at the end of the season.

And Edinburgh head coach Michael Bradley believes the duo can become key figures at the Murrayfield club.

He told the club's official site: "Edinburgh Rugby have earned some landmark results this season and we're delighted that quality players are becoming increasingly aware of the bright future being pieced together here at Murrayfield, as we seek to build on the advancements made this season.

Passion

"John brings a wealth of experience with this performances for Wales during a very successful period for the national side.

"He has a huge passion for the game and has expressed a desire to broaden his horizons with the challenges that rugby can offer him here at Edinburgh Rugby and by being part of the brand of rugby we play.

"Richie is a very talented, international scrum-half. He's a quality player who possesses a natural ability to make breaks.

"He's also a very good organiser so should be a perfect fit for the direction in which we're looking to drive Edinburgh Rugby.

"Both players and will add a significant amount of force to our challenge in both our RaboDirect PRO12 and Heineken Cup campaigns next season."