Jordan Elliot's five goals helped the Midlanders defeat Welsh Wanderers 14-8, while there was a five-goal contribution from Chris Icely in Polytechnic's 12-7 success against London rivals Penguin.
For remaining teams, there remains much to play for when the Division 2 programme completes at Lancaster next month.
Worthing boosted their prospects with a 15-1 defeat of bottom team Manchester Hawks - including four goals apiece for Peter Benedek and Joe Hazeldine - and a 10-4 win over Croydon, including four goals by Shaun Hochkiss.
Sutton & Cheam also claimed two victories - 14-11 against Penguin after building a 5-0 lead in the first three minutes and 14-6 against Manchester Hawks.