Hello.
It's not Holmegaard, I'm afraid. It could be from Poland, China, maybe Sweden.... not sure. Someone else here can probably help a little more.
As a quick reference, Carnaby range was only ever made in white, yellow, blue and red/orange (a colour called 'Coral' by Holmegaard). That's not to say that all cased glass in these colours is Holmegaard either!

These two pages cover
most of the standard Carnaby shapes:
Page OnePage Two