Machine generated contents note: One.Introduction -- Two.The policy context -- Three.Lay health workers in practice -- Four.Benefits and value -- Five.The lay perspective -- Six.Walking for Health - a case study -- Seven.Sexual health outreach - a case study -- Eight.Community Health Educators - a case study -- Nine.Citizen involvement in neighbourhood health - a case study -- Ten.Commissioning and delivery -- Eleven.Dispelling the myths -- Twelve.Future directions