Lancaster's scorers were Tom Curwen (5), Alex Parsonage (4), Graham Harrington (3) and Scott Sharpe.
In Division Two, Marcus Hook was on the mark with a hat-trick in Birmingham's 8-4 defeat of West London Penguin. Sutton & Cheam's 12-8 victory over youthful Manchester Hawks included four goals by Gerarda Biancardi and three from Stephen Bayles.