Liberty flights defiantly do a pomegranate flavour, I have a small sampler of it.
They have a us and uk site, so should be what you need, prob even do an Irish cream, though I can't confirm that.
For what it's worth, the pomegranate flavour for me was ovearly sutble and a bit nothingy. I got 100% PG at 18mg, but it could just be me, I tend to favour strong tasting juices.