How many British residents speak Greek?

Reading Charlemagne's notebook blog on the topic of 'The Disaster of Monolingual Britain' (The Economist blog, Saturday, 26 September), I wonder how many British residents of Corfu would claim to speak operational Greek? Have a look at
http://www.economist.com/blogs/charlemagne/2009/09/the_disaster_of_monolingual_br.cfm
Also worth a look, on the European Day of Languages (26 September) are the following statistics:
http://europa.eu/rapid/pressReleasesAction.do?reference=STAT/09/137&format=HTML&aged=0&language=EN&guiLanguage=en

Viscount Kirkwall was shocked that so few British officials knew Greek, back in the times of the British Protectorate.

It's lucky we don't have to take language examinations in order to live on Corfu . Yet.