It stands for Know Your Midwife . Another term for it is CMP (community midwife program). They are usually quite competative to get into as they only take a certain amount of women due per month so as soon as you know you are pregnant it's best to ring asap. Where I live you have only 3 midwives that you see your whole pregnancy and one of them is guaranteed to be at your birth, not just whoever is on shift that you have never set eyes on before. So you actually form a bit of a relationship with them before your birth.