Yes you can. If you have a Sky HD box, you can watch the free to air TV channels with Zero Cost. Just cancel your subscription, and all of the BBC, CH4 ITV channels and many more will be viewable after your contact ends. (See a Channel List below)
If you have SkyQ, this is not the case, when you end your Subscription, you are suppose to return your equipment as you are renting it from sky, so this is not an option.
An Overview of the Freeview channels on the Sky Boxes without subscription.
