What you need for a band is affiliate membership of the EFDSS as a band. It has the advantage of covering all members and caller regardless of the make-up of the band, as long as it's performing under the name registered for EFDSS membership. Individual names are not required, other than (naturally) for the person who makes the application.

Being an individual member of EFDSS DOES NOT cover the band, and neither does MU membership (which you can only have per person, not per band)

MU membership is well worth having additionally for other reasons - for a start it covers you performing outside of your band; you get legal assistance when you need it and you are supporting an organisation that campaigns on behalf of all musicians wherever their living is threated by issues such as licensing restrictions.

Anahata