Seasonic S12 PSUs soon available in the UK. Edit: 430W model too
Ok, they wont be available until late May and the 430W S12 wont be available but these are very nice PSUs. Just thought they might be of interest. They have an excellent reputation in reviews, particularly from silentpc review. A bit pricey, but they are quality units. They have have slightly noisier fans than the 430W and below models but still should be very quiet, particularly as silentpc pretty much rated the 430W S12 as one of the quietest fanned PSUs you can buy. Roughly 80% efficiency too.
Here's the link.
I've got a 500W model on pre-order for when i build my new system in June.
Edit:
They've added the 430W model which has a slightly quieter fan. SilentPC Review think it's the dog's danglies - very quiet, superb power regulation and very efficient.
Here's the review
Now the question is whether to ditch my pre order and go for one of those 430W models. Hmmm, decisions decisions.