The French inheritance laws are pretty stringent and most attempts to get around them seem to get tripped up.

As Frogblogger mentioned, the UK limited company idea doesn't really work. Here in France there is the SCI, which more or less accomplishes the same thing but you're up against the French legal notion that you cannot disinherit your children. Period. (I'm in a similar situation and believe me, I've tried to find a way!!! )

You'd have to talk to a notaire here in France, but you may want to consider putting the French house in your name only (which would require that you change your marital regime to one of separation de biens).

I take it from prior discussions here that if you were married in the UK you're assumed to fall under the default communauté regime or something similar. I'm not sure what it would take in the UK to establish yourselves as "séparé de biens" before you take up residence in France but it could be an option. (And is bound to be cheaper than doing it here in France.) If you wait until you come to live in France, there is always the question of the source of the money used for buying the house that can trip you up.
Cheers,
Bev