If anyone is unaware the Brits and French absolutely despise each other. Going back further than the 100 years war (imagine over 100 years of war) finally settled at the Battle of Agincourt in 1415 with Britain controlling most of France.
Then ABBA come along and won the ESC with Waterloo which marked the annihilation of Napoleon at the Battle of Waterloo, 1815. Napoleon is THE French hero and if you're looking for a fight just slag off Napoleon to a French guy.
France never recovered from Waterloo and ABBA and to add further insult the Paris to London cross channel train terminates at Waterloo Station in South London.