As the NUCO insurance is a group policy you do not have an individual policy number.
NUCO insurance is taken out with a third party called Endsleigh, Endsleigh will validate your cover by your NUCO booking reference, your full name and your date of birth.
The group policy numbers are:
STANDARD wintersports policy – NS9 0048900
SUPERIOR wintersports policy – NS9 0048918