Educationista offers UK Home-educators a method of organising home-ed events that is totally free to use*
Home-Ed event organisers simply register for a free login and then create their event.
Once the event is live on the website, you can publicise the link to your local home-ed group and would-be attendees can sign up and register for your event.
You can manage your event via the website, confirm attendance and download a csv file of attendees.