Will there be ongoing charges?
No - this is one of the main differences between Freeview® and pay television - there are no sign up fees, no monthly fees and no contracts.
You buy the hardware, you set it up (or get a quote from an installer to do it for you) and the service is free.
All you need is a Freeview® Digital Receiver or Recorder and a UHF aerial or a Satellite dish. Then, it's free forever!