I have yet to see anything BRITPART that has been decent, or has lasted. Perhaps sometimes they will have a good batch, not that I have seen but thats not good enough, it needs to be consistently good quality.
Britpart don't make anything, they send patterns out and the lowest bidder gets the contract. The parts tend to be copied poorly and made with low quality materials.
A list of Britpart failures I know of (seen firsthand, in photos or from other LR enthusiasts I know):
I bought some tail lights, honestly didn't think they could go wrong with them, oh how wrong I was, when the lamps heat up the plastic lamp holder melts, the spring then forces the lugs of the lamp through the plastic like a hot knife through butter. Result, lamps wont stay in place, replacement needed.
Catastrophic TRE fail, as in ball joint was able to slip through the housing, because they skimped on material around the ball so that after a small amount of corrosion it was possible to pull through. That just should not happen at an early stage of deterioration.
Water pumps with casting issues.
Brand new seals that leak instantly as they are not a good enough fit.
A switch which failed immediately as the contacts inside were assembled the wrong way round.
Clutch plate that the centre drive ripped out of after 2 days use.
Brake masters that are already letting fluid leak past the seals BRAND NEW worrying!
Thats just to name a handful.