Yes. The JFAUK membership insures you under the Federation of Martial Arts, with a member to member cover of £10,000,000. This means you can practice judo at any dojo or event worldwide with the permission of the organiser. Please note that organisers do reserve the right to only accept entries for licence holders that they specify. This means that they can exclude certain governing bodies if they wish to do so. This is usually written on the entry documents.