Hi,
Originally, I thought it had to be Scandinavian.
I have a page of listings I printed from the UK ebay site on Nov. 14th. It is shown as "Whitefriar's strapped vase in sea green" and the listing had 8 days to run, unfortunately. Mine is the same color as yours, and the one on ebay seemed to be more steel than green. I believe in the detail section, the name Wilson was mentioned as the designer. This was the second time I had seen this vase with the same ID, but I'm a bit disorganized, and didn't notice if it was the same lister. Also, I know nothing at all about Whitefriar's beyond pictures, although I think I have a WF's pot belly vase which I need to post for confirmation.
Hoping for an ID,
Adair