Piplers on the Quay had some when I was there last. They also stock the Starbrite stuff too. Or if you trundle off round to Mitchell's you'll find the chandlery there has some too.
It is without a doubt an excellent product, I use it and stock it /forums/images/graemlins/grin.gif /forums/images/graemlins/grin.gif However to get the best results, it is best when used with a polishing machine with wool mops, not the sponge ones it is also advisable to follow up with Finesse IT , to get rid of the "polishing" swirl then followed by either the 3m liquid wax or paste polish to seal and protect, excellent results can be obtained even with faded blue or red gelcoat.