Outside of the US Dell won't sell you a laptop with linux or no OS. I tried enquiring in th UK about the ultrabook that's on sale with Ubuntu in the USA and was told no, no chance. This was a business enquiry too, not just consumer.
It was a few months back so I guess it could have changed.
I purchased the Dell XPS developer edition here in DK 2 months ago. While it's under "small business", you can buy it as a private person (the only downside is a stream of annoying small business email ads until they acknowledge your unsubscription). Here it is on the UK site: http://www.dell.com/uk/business/p/xps-13-linux/pd
That's changed recently then. I'd still like it if they would sell you any of their stuff without windows. I don't even need a discount, I just don't want to pay MS for a machine that won't be running their OS.
It was a few months back so I guess it could have changed.