While changing the wheels at the weekend I noticed a CV boot was leaking. Now, this is odd because I had replaced it. So, I whipped the wheel off. What I discovered is that the larger CV clip supplied by sh!tpart, although it appears tight, isn't QUITE tight enough and as it gets warm, expands just enough to let the grease slowly leak past. As it happens I nipped out at lunchtime to Allparts for a standard CV clip (already had CV grease). So, this evening I popped off the boot, refilled and replaced with a standard clip. MASSIVELY better.
So, if you got for the Britpart CV kit (and to be fair the boot has been on there a while now and hasn't fallen apart yet) then nip to your local factors and buy a bog-standard clip for under £2 because the sh!tpart one isn't worth 2p.
Incidentally, did I mention the Britpart brake calipers are so chunky they leave very little clearance (we're talking a few mm) between the caliper and the inside of some designs of the 16" rims? Strangely enough the Land Rover ones are more sleek and rounded and now I know why.