Guildford were crowned Southern League Super 8s champions after a thrilling last ball victory over St Lawrence and Highland Court.
Chasing 114 from 15 overs, Guildford's opening pair laid the perfect foundation with a first-wicket stand of 24 - a platform Jude Turner made the most of by hitting 50 before retiring.
However, St Lawrence and Highland Court took a flurry of wickets to take the game to the final over where Guildford needed three runs with two wickets in hand.
A run out caused nerves to jangle on both sides but, with the scores level, Phil Morris hit the last delivery for four to hand her side victory.
In the semi-finals earlier in the day, Guildford chased down Twickenham's total of 109 while St Lawrence and Highland Court edged out Shepperton in a close match.