The London side led 3-2, 7-4 and 8-5 in the first three quarters. But in a tense final period, Leeds caught up to 9-8 - and then failed to convert a man-up chance in the final minute.
The Championship 1 trophy was presented by BWPL Match Secretary, who is pictured with, from left to right, back row: Lindsey Williams (coach), Sasha Tinkler-Davies, Izzy Dean, Hannah Patchett, Rebecca Mulcahy. Front: Kathy Rogers, Karen Friefeld, Mhairi Nurthen, Helena Phillips, Anna Szyszko, Emma Shkurka.
In the same division, Mid Sussex Marlins beat Penguin Emperors 9-8 thanks to a goal four seconds from the end by Danica Brazier immediately following a Penguin exclusion.
In women's Championship 2 at Leeds University, English Roses lost for the first time since entering the British League this season - 8-6 to Hucknall. Goals by Rachael Endy (4), Georgia Bosworth (2) and Cara Saunders (2) swept Hucknall into an 8-1 lead before they lost a player to a brutality offence and conceded late goals to the Roses.