SAINTS have secured the services of Jordan Turner and Mark Percival.
The centres have agreed deals which will see them contracted until the end of 2016 and 2015 respectively.
Both made their debuts for Saints this season.
Nathan Brown, Saints Head Coach, said: “Jordan has done well since he came to Saints and is continuing to improve and adapt to how we play. He is versatile too and has impressed us with his attitude both on and off the field.
“Mark is a young home-grown player who has come into the team and done well. We’re pleased with how well he has adapted to the first team and now he needs to continue to work hard and keep his feet on the ground.”
A former England under 18s Academy International and Captain, Turner joined Hull FC from Salford City Reds in 2010 before moving to Saints in 2012.
He is predominately a centre but turned out for England Knights as a Stand Off at the end of the 2012 season.
He’s scored five tries in 14 games so far this year and is also versatile enough to play in the back row.
Academy International Mark Percival, 19, has already caught the eye with three tries and 12 goals in just seven appearances with the Saints.
He is part of seven Academy players who have been given debuts this season.
Anthony Walker, James Tilley, Jordan Hand, Dom Speakman, Luke Thompson and Duggie Charnock have all pulled on the Red V for the first time this year.
And Joe Greenwood, Adam Swift and Nathan Ashe have all been given more game time.