OK a couple of different answers there to an unclear question. Let me try.
1) Freeview is a term used for digital TV coming from ground-based transmitters. Also known as DVB-T. Your tuner in your TV can receive this, from a suitable UHF aerial installation for your location.
2) A satellite receiver (such as a Sky box) receives digital TV from a satellite (also known as DVB-S) and produces a video and audio signal from it. The "free" programmes you can get by this method are most commonly known collectively as "Freesat". Your TV's tuner cannot receive DVB-S.
3) Freeview and Freesat are not the same thing, and the available programmes are no the same.
You can use a Sky box connected to any TV to receive Freesat. A SCART cable, set up for RGB, will typically offer the best picture quality. This does not make use of the TV's tuner and does not require an aerial.