basically my insurance is almost over, iv bought a new grande punto and i will have a years no claims

however, my insurance ends on the 30th of march but iv had a full uk license since th 17th april.... the problem is, in order to claim on the 1 years NCB i have to be driving for 1 year with full uk not provisional, how do i get around this, would i have to take out a short insurance policy for a month untill 20th april?! or should i ring up and explain my situ and the compay would work around it, im with tesco atm

any help is very welcome.