Streatham-Croydon are celebrating the league and cup double after winning the Surrey Bowl at Imber Court on Monday.
Having trailed 8-0 to Economicals at one point, a second-half Oli Goldsmith try and five points from the boot of Aaron Brown gave them victory, despite a late onslaught.
It means the Thornton Heath-based club add the trophy to the Surrey Three championship they won last month.
It completed a good week for the club, whose minis side enjoyed a training session led by Harlequins players Darryl Marfo and Sam Twomey, an England U20 international, as their prize for winning the QBE Rugby Pro competition.
Old Whitgiftians meanwhile lost the Surrey Shield final 31-17 to Old Wimbledonians.