Haven't seen it. But, you can make your own, it is really easy, cheap and won't have all the chemicals of the packet stuff.
Just make a basic roux, use cornflour (sold in Lidl as "cornflour") for a smoother sauce. Then add the parsley, milk, salt and pepper to taste. Add enough milk to make it the consistency you prefer. Probably the red milk would make a richer sauce. I've learned how to do all my own sauces, like bread sauce for Christmas as those ones aren't sold in the packets here, and by doing so I have gone off the packet ones and fresh made ones are better.