Oxford English Dictionary Online [24/7] - Provides not just a word's meanings but its history too. More about OED Online
Language resources in Westminster Libraries - Which library to visit for which language, and details of language courses in stock.
Internet for Modern Languages - A 'teach-yourself' tutorial on Internet information skills for those studying languages. Part of a wide range of subject-specific tutorials from the Virtual Training Suite.

Transparent language Online - Radically better language learning, in one complete experience. Click here to set up and log into your Transparent Language Online account.
Talk to your baby - Printable leaflets and other resources to help children develop good talking and listening skills. Each leaflet available in thirteen languages.

Oxford Dictionaries [24/7] - A single location incorporating the English Language resources of Oxford Dictionaries Pro. Library members can access this resource within all Westminster libraries and from home by entering their library card number. [More about Oxford Dictionaries]
Babelfish - Translation service from Yahoo! Type in a phrase for translation, or get a whole web page translated into / from an increasing range of (mainly European) languages. NB: Useful, but has all the obvious drawbacks of translation by machine!

English UK - Accredited English courses throughout the UK - brought together by the Association of Recognised English Language Services in association with the British Council.
BBC Learning English - From the BBC World Service.
Howjsay.com - This website provides the correct pronunciation of 104229 English words. Once found, your word is spoken when you hover over or click it.

EFL directory - Details of institutions in the UK offering TEFL / TESOL courses, as well as information on where to learn English in the UK.