evidence: Should we be for or against British citizens having to be able to speak English? What makes a British artist sing in Cornish when she could be communicating so much more usefully in English – not only the lingua franca of England and the British Isles, but a language that's now spoken and sung across the world? Why is the Irish language such a politicised issue when some claim that there are now more Polish than Irish speakers in Northern Ireland? And where do users of sign language fit into these debates?