http://kb.mozillazine.org/Dictionaries
How to install and un-install dictionaries in firefox. Trick is /usr/lib/firefox-VERSION/dictionaries/ (files can be extracted from the xpi).
http://www.duedil.com/
Free access to companies house data with a social overlay. Potentially includes data that Companies House charge for.
http://capsulecrm.com/
Looks like a British version of HighRise. Super simple CRM / contact management aimed at small businesses with less of a "sales process" than the typical CRM complication. £8/user/month.
http://www.crowdcube.com/
Crowdfunding business in the UK. Similar to KickStarter, but focused on actually buying equity rather than a finished product. Seems a lot less polished and much smaller scale that kickstarter.
http://www.bytemark.co.uk/index
UK based hosting provider, includes a managed hosting offering. Hat tip Steve Kemp, he works for them.
http://www.guardian.co.uk/commentisfree/2010/may/16/britain-turns-serious-david-mitchell
A Guardian article about a man who lost his job, was arrested, interrogated for many hours, and subsequently fined £1'000 for joking that he'd blow up an airport on twitter. Outrageous.