Seb, 26, joins the club having previously played for Brentford, AFC Wimbledon, Bromley and at last seasons Ryman Premier League champions Hampton & Richmond Borough.

Seb has also had loan spells at Windsor & Eton and Woking.

Seb has worked with new Blues boss at AFC Wimbledon and is looking forward to linking up once again with Jamie at Grays.

Speaking after being signed for the club Seb said:

"I'm excited to be linking up with Jamie again, he's an experienced coach and a straight talker. I'm also looking forward to being involved with Grays as we move into becoming a fan owned club. Jamie & I have seen 1st hand the success fan owned clubs can have not just on the pitch but off the pitch in the community too"