My French friends here call all British people Anglais and all British traditional music Irlandaise - unless of course when it has bagpipes, when it just might be Ecossaise! The Pays de Galle doesn't get a look in... but it's not only the French perspective, ask most non-folky Brits and the only 'traditional' English tune they'll be able to tell you (after much head-scratching) will be 'Greensleeves'!