The seppos parlez American now then eh? 
‘We have really everything in common with America nowadays except, of course, language’ - Wilde
‘England and America are two countries separated by the same language’ - purportedly by Shaw
‘It is a misfortune for Anglo-American friendship that the two countries are supposed to have a common language’ and European writers and scholars in America were, he said, ‘up against the barrier of a common language’ - Bertran Russell
There appears to be some controversy whether Churchill actually said it.