No. It'll be tuned for french TV. To get Freesat in France you either have to stream it over the internet using a vpn or have a dish put up and have a Freesat boxed shipped from the uk. Over the internet is better if you have a decent connection speed, as the weather greatly effects the dish signal ( to the point you lose channels for hours/days) since they moved the satellites years back.
You can get Sky (standard) or Sky Q installed, but these services are not cheap. I looked at getting sky and they wanted 1500 to supply and fit and supply a UK address. Then you have your subscription costs on top. Sky Q was 2k + subscription.
Not sure about Panasonic but I just bought an LG led in Spain and when I set the menu to UK English and input the desired postcode it automatically activated the FreeSat tuner and menu not just a generic tuner as I had expected.