SECAmb vehicles to carry important 999 and 111 messages Posted on 09/02/2017 NARU»News Wire»Ambulance Trusts»South East Coast Ambulance»SECAmb vehicles to carry important 999 and 111 messages South East Coast Ambulance Service NHS Foundation Trust (SECAmb) is supporting NHS England in a public information campaign on when to call 999 and NHS 111.