Winter tyres are normally marked 'M+S'. (There's no statutory requirement for this in the UK but in some Scandinavian countries it's illegal to drive without tyres labelled 'M+S' during certain months of the year. Hence tyre manufacturers, who distribute their products across many countries, generally put this on all 'winter' tyres).
Unless you're experiencing much worse weather than in Ireland, you might want to think twice before having them fitted. In this article, from the Irish Times, a representative of Bridgestone (who's obviously got a vested interest in promoting the sale of their tyres) indicates that they're inappropriate for Irish (and presumably British) weather conditions:
http://www.irishtimes...06/1224261723511.html
Chris