instead of buying very expensive seastar hose from USA, there is another possibility, using the same fitting ends (mean the tip of fittings)
May be you're interested to buy this in France, the fittings are reusable, you just need to buy the good lenght and the fittings,
can be ordered directly to the web site, no necessary to order trough a french dealer, then shipping to UK.
Or ask to hypro marine in UK if they are able to make a pair of hose with sea star fitting crimped on them.
Hope this helps