Just done a quick google for "plastic bottle sleeves" and its coming up with a few links including this topic but the few i have found seem to want 30k runs. And the others i looked at seem state side. Ebay offered a wooly jacket option, which isnt what your after either. But there must be a UK supplier too.
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Wow Wirral History is coming along Great! Wirral History
we get +200 new members a month now