It has been a few years since these sides last met but having just been relegated into London 2 SE, Maidstone will be expecting to make an immediate return to London 1 South.
Horsham have had a good pre-season but know that they face one of their biggest tests when they make the long trip to The Mote.
Horsham Lions are away to Brighton 3's but at the time of writing Brighton are unsure whether they can raise a third team.
Horsham Barbarians kick off at 15:00 at home to Brighton & Hove Sea Serpents.
Updated 18:34 - 7 Sep 2018 by Richard Ordidge