From London's cockney twang to Birmingham's Brummie accent, Britain is home to almost 40 regional dialects – each with its own unique words. Now, a study has revealed the quirky regional terms at risk of dying out. The South West's'ansum' and Yorkshire's'thoile' are just two of the terms that have declined in usage by up to 98 per cent over the last 100 years, according to researchers from SAS Northern Europe. 'As dialect is continuously changing the diversity and richness of our language, the quirks, idioms and phrases often associated with certain communities will continue to change over the next few years,' said Dr Iain Brown, Head of Data Science at SAS. So, how many of these regional words do you still use?