I don't know about 'unfriendly' but these appear to be the numbers:
"The French consulate in London estimates between 300,000 and 400,000 French citizens live in the British capital" which compares to city populations as follows:
Paris - 2.3m
Marseille - 859,000
Lyon - 488,000
Toulouse - 447,000
Nice - 344,000
whereas "20,500 of the 135,000 expat Brits in the country live in or close to Paris".