Where has this request come from? It would be useful from your perspective to understand their motivations.
From a legal obligations perspective, you could indeed review your policies to ensure they comply with the Equality Act and review the provisions for inclusion across all 9 protected characteristics: age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation. Perhaps with a view to assessing the needs of various groups in terms of your sport, reviewing participation of these protected groups versus estimated potential members who may feel excluded or be excluded due to inadequate access provisions.
However, if the request is to write a policy on which category trams athletes can compete in and with what restrictions... I think this will unfortunately have to come from the national body.
These are age, disability, gender reassignment, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation.