I finally found them in Waitrose, but I think others have got them in asda.
I just quartered an onion, chopped up some garlic, boiled a kettle, threw in a chicken oxo cube, some dried herbs de provance, and a bag of frozen broccoli.
Thats it!
Then when cooked, I put in blender with 4 Blue cheese traingels, salt and pepper ( You get 5 for a Hexa, but I ate one to try them!) blitzed it and TA-DA = Soup!