Unincorporated association
You can be constituted as an unincorporated association. All you need to do is draw up and agree a constitution to help your group run smoothly.
Because you don’t need to be a charity or have limited liability, you don’t need to worry about registering with any external organisations such as the Charity Commission or Companies House. You can just get going!
Your route so far
Open group? Yes Flat structure with no committee Yes Organisers paid? No Want charitable status? No Want to be incorporated? No Want to apply for grant funding? No