If you've been previously using ADSL broadband, then it's most likely that the router, which is the device in your home that transmits Wi-Fi, will not be compatible.  Because of this, you will likely need to upgrade or swap your router so that the right connections can be made to it to ensure that your usage is maximised.  Some providers will charge you for a new router, which can increase the overall cost of their fibre packages, although the best fibre broadband packages will include a new router for free and will likely instal it for nothing too.  There's a possibility that the router you get for FTTC will be different from FTTP. This is because the port needed to connect each type of wired cable will be a bit different. Some routers will have both sockets so that if you upgrade to full-fibre, you won't have to replace your router again.