It is used in the UK. More information: http://en.wiktionary.org/wiki/warm_the_cockles_of_someone%27s_heart http://en.wiktionary.org/wiki/warm_the_cockles_of_s

It is used in the UK. More information: http://en.wiktionary.org/wiki/warm_the_cockles_of_someone%27s_heart http://en.wiktionary.org/wiki/warm_the_cockles_of_someone%27...