I've given a 9/10. When I've had to use the CS forum I've (nearly) always had a prompt reply, but I've had one of my issues ignored before which resulted in me phoning my problem in. Please note my 9/10 is
only for the CS forum - all other modes of communication and issue handling with OcUK has been terrible.
Telephone: Wait for 25min for answer, talk to someone who can't help, get given a promise of a reply by email or call back which never happens. Case in point: Bought a NZXT Phantom which was missing the USB header cable, I initially submitted a case to the CS forum but didn't get a reply for two days so I phoned it in. OcUK's response? Send the whole case back. Really? The whole case for a USB header cable? I ended up emailing NZXT and having one shipped directly from the Netherlands. That is how you do customer service.
WebNote: Submit issue, no way to track the case progress or see previous replies/comments or previous submitted issues. Receive one line answer which doesn't resolve the issue. Give up and go to CS forum.
And on another topic, I haven't had to RMA anything to OcUK for ~3 years but the last time I did it was an absolute nightmare. Everything I sent in came back as No Fault Found and I was charged the delivery back to me, only to find out it wasn't working. Each time I went direct to the manufacturer and received a far better service.
I've just had to RMA a motherboard as I had an issue with it outputting video from an add-in GPU and it was missing an advertised feature (not OcUK's fault - mods, see here:
http://forums.overclockers.co.uk/showthread.php?t=18326159) and I'm dreading the whole experience to be honest. I've taken photos from every angle before packing it, photos of the packing and photos of the box once packed with shipping labels on it, it's also going via RMSD and has been packed to withstand a dropkick as I simply don't trust my refund will go through without issue.
Sorry guys, I really hope you can prove me wrong and turn my view on OcUK back around but from my previous experiences I'm not confident. I'm sure you have the best of intentions but some staff seem to not give a damn and it's them who let the side down in my opinion.
If this breaks the rules then I apologies, please delete or edit my post but you did ask for opinions and this is mine!
Edit: Also, as others have said, a central issue tracking system is needed, if you contact OcUK by WebNote, CS forum or Telephone it needs to be logged somewhere so every technician can see the case history no matter of how you get in touch.