Forward trio Stewart Maguire, Kristian Chesney and Cameron Gentles will all be returning to the club for the 2013/14 season.
Maguire, 23, a loose-head prop who has previously played for Connacht and Newport Gwent Dragons, made 19 appearances for Esher last season.
Experienced lock Chesney, now 39, also featured prominently last season, playing 21 times, and is key to coaching in line-outs. He made his professional debut 20 years ago and spent 14 years with Saracens earlier in his career.
New Zealander Gentles made 15 appearances in his first season at Molesley Road, but saw his campaign cut short with a knee injury. He has recovered well after an operation and is looking fit and strong in pre-season.
The club will make further announcements about re-signings for next season in the next few weeks.