Laura Massaro became the first Englishwoman to win the British Open title in 66 years
The Lancastrian prevailed 11-8, 11-8, 6-11, 11-6 in 55 minutes over compatriot Sarah-Jane Perry in the first all-English women's final since 1953.
"I never really felt comfortable," admitted Massaro. "SJ played too well for that, but to be a double British Open champion is just fantastic."
Victory for Massaro, her second title in the sport's oldest event, was her first tour win since last October and showed – aged 33 – that she remains at the top of her game.
Laura Massaro beat Sarah-Jane Perry to claim the British Open title
"Laura just stopped me from playing well," added Perry.
The World Series finals across both genders have seen an Egyptian monopoly in recent years.
But English players were resilient in Hull, although Nick Matthew, who also continues to be a threat aged 36, fell just short of his fourth men's title since 2006, losing out to Frenchman Greg Gaultier 11-7, 8-11, 3-11, 3-11.
Gaultier, 34, is now expected to become the oldest world No 1 in next month's rankings. He won his first British Open title – dubbed the 'Wimbledon of squash – a decade ago.
Meanwhile, the next 12 months looks set to be a fascinating journey for Massaro and Matthew.
With the one-year countdown for next year's Commonwealth Games looming, the Gold Coast could herald the end of their superb careers.
Massaro will be chasing a first single's title, while Matthew, the Glasgow 2014 flagbearer, will bidding for a hat-trick of men's titles.