Archive Stories and Campaigns Volunteer Why volunteer Why volunteer with Harrow Mencap? You will change a life but we promise it will change yours as well. We work with volunteers who are as passionate about supporting people with a learning disability as we are and we would love it if you join us. In return Harrow Mencap offer the chance to develop new skills and experience, as well as make new friends. Contact our HR team on 020 88698485 or email [email protected] for further information.