For this week only (Sat 18th - Sat 25th) Roland are a holding a sale across the whole of the UK. From what I've read the offers are only available in stores, so if you're interested then I suggest you head on in to a local dealer to see if anything takes your fancy.
You can read about it here:
http://www.roland.co.uk/articles/default.aspx?c=331
Now aside from the extended warranty you do seem get some extras. For example I bought a Juno-G they threw in a free SRX expansion of my choice and when I was in today someone else bought some V-Drums and got an extra bass pedal, stool and some headphones I think. I'm pretty sure there's some deals on BOSS pedals too.
Bear in mind that I'm in no way affiliated with Roland of course - just thought I'd give some folks on here a heads up. I found out via e-mail since I'd registered at Roland's website a while back in order to access old product manuals.
Also I'm not sure if this thread would be more suited to Buyer's Guide, so if any moderators are reading this and think this is the case could you please move it?
Thanks guys.

