Not sure if I'm supposed to spread the new about this kind of stuff here (please don't ban me I'm not - just trying to help ), but I've just been shopping around for some spark plugs, filters, oils etc. and noticed that Opie Oils are doing a 15%-off on all their stock until midnight 22nd Nov (which means this Sunday).
This is excellent news for me, because they seem to stock almost everything I am currently after (Denso Iridium plugs, Mobil1 0W40 oil, fuel and oil filters) - except Pipercross air filter.
So I thought I'd share a good find - hope it helps someone.
Btw. they do extra discounts for members of bimmerforums (well, they do for members of pretty much anything at all - but the fact remains, it's another 10% off, or so).