Prisoners'​ Advice Service | 812 followers on LinkedIn. Listening to and advising adult prisoners in England and Wales | The Prisoners’ Advice Service is the only independent registered charity offering free legal advice and support to adult prisoners in England and Wales. We do this through our telephone advice line, letters clinic and legal outreach sessions, as well as providing information within the sector. We do not accept Home Office or Prison Service money as this may affect our independence.