The requirements for a "group" to be considered an "Association" under the Equality Act 2010 are in the Explanatory Notes:
- This section explains what is meant by terms used in Part 7 of the Act. It defines an association as a body with 25 or more members where access to membership is controlled by rules and involves a genuine selection process based on personal criteria. It gives a Minister of the Crown power to amend this definition so as to change the number of members required by the definition.
Examples
✅ Associations include: private members’ golf clubs and gentlemen’s clubs where applicants for membership are required to make a personal application, be sponsored by other members and go through some kind of selection process.
✅ Membership would cover full membership, associate membership, temporary membership and day membership.
❌ Casinos, nightclubs and gyms, where payment of the requisite “membership” fee is all that is required to secure admittance are not associations for the purposes of this Part. These are covered instead by the provisions in Part 3 concerning services provided to the public.
❌ A book club run by a group of friends which has no formal rules governing admittance or whose membership is less than 25 is not an association for the purposes of this Part.
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The RSPB "Nature Walks for Women" (£5:50 - £6:50) are a SERVICE being offered by the RSPB,
In which case, the relevant part of the EA2010 would be for Services not Associations and the "under 25 rule" does not apply.
https://events.rspb.org.uk/events/96479