Warriors loosehead prop Lewis Holsey will line up for London Scottish in their Championship Cup quarter-final at Newcastle Falcons on Saturday.
Holsey, a member of the Three Pears Warriors Academy, has impressed since he joined London Scottish on a dual registration last month having previously played for Loughborough Students in National Two North on a similar arrangement.
Centre Oli Morris will play for Ampthill in their rearranged Greene King IPA Championship match against Yorkshire Carnegie at Headingley on Saturday.
Morris helped Ampthill to win the National One title last season and was due to make his seasonal debut for them against Yorkshire Carnegie two weeks ago only for the match to be postponed because of Storm Ciara.
Scrum-half Callum Morris is the third Warriors player who will be gaining valuable senior experience this weekend as he plays for Stourbridge in their rearranged National Two North match at Wharfedale on Saturday.