In premier three, Lewes crashed 7-1 at Whitchurch, who have now moved into the promotion places.
James Bainbridge scored a hat-trick for the Welshmen while veteran Martin Stillman hit the lone reply for Lewes.
Brighton retained top spot in South Premier division two after winning 3-1 at Bourne-mouth with a weakened side.
Robbed of four regulars, Brighton fielded a number of youngsters but still did enough to beat the bottom side.
Mark Sully scored twice with player-coach Craig Carolan getting the other.
Third-placed Chichester, who entertain Brighton on the final day, won 3-0 at home to Tulse Hill and Dulwich thanks to goals from Ralph Veltom (two) and Neil Pendle.
Three teams remain locked on 47 points with two games to go after second-placed Sevenoaks beat Staines 7-1. Brighton will clinch the title if they win their remaining two games but could miss out on promotion altogether should Chi beat them in two weeks' time.
Eastbourne pulled off a shock in the Kent/Sussex Regional League with a 3-2 win over leaders Blackheath.
Jacques Loubse, Ragab Aga and Robbie Redhead got the goals to sink a Blackheath side who had previously lost just once this season.
Worthing remain third after a 3-3 draw at home to Ashford. Bryan Lock scored twice and David Edmondson converted a penalty flick.
Lowly Horsham turned in an awful display as they lost 7-1 away to BBHC, with Richard Lowe hitting the consolation.
Long-serving goalkeeper Neil Burlinson said: "That was the worst display I have ever seen by a Horsham side."
In division one, South Saxons caned whipping boys Crowborough 7-0 with goals from Tim Eldridge (two), Carl Lewington (two), Toby Reed, John Morgan and Pete Burton.
Crawley lost 5-1 to new leaders Old Williamsonians.
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