PC World UK, has stock now of the Acer Aspire One - 8GB Blue, 120GB Linux White, and the Windows XP models.

8GB blue - £199
120GB Linux White - £229
Windows XP models - £299

Dixons (part of PCWorld) also have the White 8GB for £199 also.

UPDATE:
5% off discount code for PC World (might only work for online delivery)
Minimum Spend: £0.00
Promotional Code: YAWAUG08
Expiry: 31/08/2008

5% off discount code for Dixons (might only work for online delivery)
Promotional Code: HOME5 or THIN5

PCWorld down under, has a nice review of the Acer Aspire One “ZG5″ and before you ask, your guess is good as mine (prob different model number in different countries maybe ?) they have more pictures on their site.

“We looked at the Linux (Linpus) version for this review, which has an 8GB SSD and 512MB of DDR2 RAM accompanying its 1.6GHz Intel Atom CPU. Straight out of the box, the Linpus interface boots up in around 20sec. It’s easy to use and its desktop contains shortcuts to all of the unit’s essential applications. Firefox and OpenOffice are installed, as is an instant messaging client that allows you to sign in to MSN, Yahoo, AIM and Google Talk accounts. The desktop is split up into four sections: Connect, Work, Fun and Files, so it’s easy to navigate, but it doesn’t allow for much advanced functionality. Unlike the Eee PC, it doesn’t have any educational tools installed.

It might be worth waiting for the Windows XP version of the Aspire One, which will cost only $100 more than the Linux version but will have 1.5GB of RAM and a 120GB hard drive. Furthermore, you might also want to wait until the 3G versions are released, which will make this the perfect tool for journalists’ on-the-scene reporting and for users who have to put up with long public transport rides. As it stands, the Linux version has a solid-state drive in its favour, as well as the seamless integration of the storage expansion slot. Another few gigs of built in storage wouldn’t go astray, nor would an extra 512MB of RAM.”

Full review here

On a side note, they referenced a little website called AspireOneUser.com

Acer, the world’s third largest PC vendor, is a big believer in the future of mini-laptops, or netbooks, and the company gave me a chance to try out its first device, the Aspire one, in an interview last week.

It’s one of the best mini-notebooks I’ve tested for the price — which ranges from US$399 to $499, software and other features.

From boot up to shut down, the Aspire one was a pleasure to use. Boot up took just 12 seconds due to the Linpus Linux Lite OS it runs. That compares to 30 to 40 seconds on other mini-notebooks I’ve tested running Microsoft Windows XP. Aspire one can also come with Windows XP, but after trying out the one with Linpus Linux, I’m not sure I’d want XP.

What Acer did best with Aspire one was focus on the Internet.

The Aspire one is designed for Internet use and comes loaded with software. The home page that opens on boot up offers software options right away, including a browser, an all-in-one email box, unified messaging center, media software and Office-like software.

Further reading at PCWorld.com