Dielectrically positive liquid crystalline media comprising a dielectrically neutral component, component A, comprising a dielectrically neutral compound of formula I wherein the parameters have the meaning given in the specification, in a high concentration, and a dielectrically positive component, component B, comprising one or more dielectrically positive compounds having a dielectric anisotropy of more than 3, are described. Also described are liquid crystal displays comprising these media, especially to active matrix displays and in particular TN and to IPS displays.