does anyone know where i can get temperary insurance only want four days as im goin away over new year and im designated driver. with my car still being off the road im going to use my nans again like i did in the summer but the last time i used it her insurance covered me for the time i needed it and quite cheap aswel but this time they cant calculate it for some reason which has put me in the shit as theres no other way of us getting to where we wana go now if i dont get the car so does anyone know of a temporary insurance provider who would cover me being under 21?

any help much appreciated