Don't know about the UK, but hose for use in the US is supposed to be USCG certified. I doubt that everyone holds to this however, and I've never heard of an inspection failing because of uncert'd fuel hose.
That said, I'd go with marine rated hose if at all possible, as it *may* have additional UV stabilizers and such that you won't find in automotive hose, which is designed to live under the hood (or bonnet.)
jky
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