I knew that I had seen something like it before, thanks Marcus. I remember reading about your lamp base. The green one that I have, has exactly the same colourway and bubble design as your lamp base. The blue one has fewer, less complicated, bubbles, literally like a spiral of intermittant, elongated bubbles.
They will be on ebay soon, unfortunately, the wedding fund for Victoria still needs to be added to. Her baby is also due in 2 weeks, so I will probably wait until the baby is born to list as I would like to go to the UK as soon as it arrives to have a cuddle and say hello.