Given relatively even numbers - with the British on the defence, and particularly with all the defensive emplacements built up over the years - the British are likely to win.
In a battle of manoeuvre the French have a better chance.
However, to manoeuvre most effectively they need cavalry and horses have always been difficult to transport by sea. That's not to say they can't do it but they take time to unload and need time after landing to recover.
Unless the landing is in overwhelming force Grand Armee size - then they are probably looking at less than a 50-50 chance.
In a battle of manoeuvre the French have a better chance.
However, to manoeuvre most effectively they need cavalry and horses have always been difficult to transport by sea. That's not to say they can't do it but they take time to unload and need time after landing to recover.
Unless the landing is in overwhelming force Grand Armee size - then they are probably looking at less than a 50-50 chance.