Egerton Park secured promotion to Division One without facing a ball on Sunday as rain ruined their final match of the season.
The Melton side were due to host third-placed Bottesford, the only team that could still have denied them promotion, but both sides were awarded eight points after the game was abandoned.
Park lead Division Two, but are likely to be caught by Queniborough Second XI who trail by 12 points with two games in hand.
Only two matches were played to a finish on Sunday, but it was no consolation for Barkby United whose relegation from the top flight, along with Sproxton, was confirmed with a hefty 154-run defeat at Grantham.
Rohan Nurse bludgeoned an unbeaten 180 as Grantham posted 288-3, and Barkby were never in sight of the target, bowled out for 134 in 36 overs.
Abandonments at the top of the table left Queniborough as the only side who can now pip Houghton to the Division One title.
The fourth-placed side trail the leaders by 33 points, but can steal the title if they win their two remaining games.
The Division Three title race is set for a three-way showdown after Sholay secured a thrilling seven-run win at leaders Thorpe Arnold.
Openers Priyank (56) and Vishal Patel (73) laid the foundations for what proved a winning total of 202-6 in a match reduced to 32 overs per side.
Dom Exton (39), Charlie Read (45) and Jones (60) led the Thorpe charge, but all fell at crucial times as the home side fell agonisingly short at 195-6.
Thorpe have played all of their fixtures, but can be overhauled by both Whissendine and Sholay if they win their games in hand.