Not really. The English accent is used to demonstrate the different classes in the film. All of us know the difference between cockney and upper class accents. How many of us would know the same difference in French accents?
You could say the same about Americans and our accents. There's only ever cockney and 'posh'. Oh, and Scottish.
And Russell Crowe's bellowing instead of singing

I'd have gotten by with the French accents. Cantona - working class, Ginola - posh
