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Gravesend ensured they would top London 1 South at the mid-season break with a 17-5 win at Old Elthamians on Saturday.
They were 5-0 ahead within a minute when Tom Bishop gathered a cross kick to score but the hosts were level on 11 minutes.
Harris added a second score for Gs and Curley added a third try, which Dalton converted, to make it 17-5 at the break.
The second half was a dull affair with both sides bogged down in the midfield mudbath and there was no further scoring.