Transgender women must be risk-assessed in order to compete in the women's game in England if they are over a certain height or weight, according to a Rugby Football Union proposal.

The union's proposed transgender policy fixes the limits at 170 centimetres and/or 90 kilograms.

An individual approved by the RFU must assess whether anyone over those height and/or weight limits will have either a "material performance advantage" over other participants or "there is or may be a safety risk to other participants".

The policy also specifies that a transgender woman's testosterone levels must be at or below a set level for a period of 12 months prior to application.

Players of non-binary gender wishing to compete in women's rugby must also undergo such an assessment if they were not assigned female sex at birth, the RFU document said.

Transgender male players will be asked to sign a declaration stating that they understand the risks of competing in men's or boy's contact rugby.

An external consultation period on the policy will run until 5pm on Friday, 16 April, the RFU said.