Registered members of the British Association of Social Workers are entitled to use the postnominals "MBASW" after their name. Membership opens access to various on line forums, advice and guidance support and receives a monthly profession (non-peer reviewed) magazine called Professional Social Work.
In October 2011 BASW launched a trade union arm (called the Social Workers' Union). This was its second foray into this territory, as far back as 1976 it launched the British Union of Social Workers, which is now part of the Community (trade union). Membership of the SWU is free for BASW members. As a certified independent trade union it will have the legal right to accompany individual members to hearings (grievance, disciplinaries etc.) held by employers.