The original British Novair was a charter carrier operating DC10-10s and 737-400s they were owned by the Rank organisation who changed the name of the carrier from Cal-Air when they took it over.
BCal wanted to sell its charter operation (Cal Air) so Novair came into being with basically the same livery as Cal Air apart from the star on the tail.
Novair UK didnt last long as they entered the IT
market when there was an excess of charter capacity.
The 'other' Novair has nothing at all to do with the British charter carrier. It is a fairly recent Swedish charter carrier carrying sun-starved Swedes to the Canaries etc. I believe before they got the 330/321s they had a L1011!