The two sides were due to clash for a second time this season, Richmond winning the opener 13-5 on a bitterly cold November night at the RAG, but the Londoners are battling a string of injuries which leaves them without front-row options.
News on a rearranged date will be posted when confirmed.
The Development XV will now next be in action at home to The British Army on Wednesday, February 19 (7.45pm).
