Will UK will still apply in France?

If one of you was to die at present then French law would apply to the estate with the usual rules of reserved portions for children.

One option would be to make a new will in which you make an explicit choice of English law. This could be a French will and you would probably want to revoke the previous one, but you would be best advised to speak to a notaire with experience in international matters.

However notaire François Trémosa said he would advise against choosing a different law when there are options available under French law. He said if you wish that the surviving spouse becomes the sole owner, it is possible to do so via a change in your marriage contract by adopting the communauté universelle avec attribution au survivant and your daughters will inherit afterwards.