Here you go martyn check this out, my mate at the body shop has just started to stock this stuff. If he trusts it it must be good as he is a sceptic of any thing new but has used it on several cars with great results.
http://www.conceptchemicals.com/zirconite/index.htmlNot cheap at £84 but if it does last 6 years its probably the same price as normal polish over that time period.
He has done half of the loan car in this and after 3 months it still beads like it was done yesterday