Enfield Ignatians will continue to play in London Two North-West for the 2017-18 season which will be marked by the presence of three new arrivals in the division, notably Hackney, Hemel Hempstead and Chiswick.
Hackney and Hemel have both promoted from London Three North-West and replace Welwyn and Stockwood Park.
Both moved in the opposite direction.
Chiswick are the only side to have played at a higher level last season.
HAC are a surprising inclusion in the league after they clinched the second promotion spot last season after seeing-off South Woodham Ferrers in the play-offs.
But the result was reversed after they were found to have fielded an un-registered player.
Meanwhile, Ignatians will kick-start their campaign with an away fixture at Harrow on September 9, before entertaining Hampstead, at Donkey Lane on September 16.
They conclude the month with away and home fixtures against Hemel Hempstead and HAC.
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