The Erbauer 750 tile cutter model number ERB337TCB is a versatile bit of kit, you can buy it from screwfix and cut a wide variety of tiles including both ceramic and porcelain. It's a wet tile cutter, has a small water tank, diamond cutting blade and extendable support shelf for those larger tile cuts.
You can cut both wall and floors tiles no problem, we used it for that ourselves actually.
