About Us Our people Trustees Trustee - David House David House David has been engaged with Harrow Mencap for over 20 years both as a volunteer and as an employee. He is an ambassador, self-advocate and an expert by experience in ensuring the voice of others is heard. He initially worked as a Person Centred Planning Support Worker, supporting people with a learning disability to help them develop their personal plans. He then went on to work with groups of people to develop their skills and support them into getting paid work. He is a passionate campaigner and has a key part to play in bringing people together to ensure that their voice is heard and that people have choices in how they live their lives. David is a keen Star Trek and Dr Who fan and also enjoys walking, keeping fit and cooking.