Is it illegal to have cctv in a shop without registering it via the data protection register.?

We;ve just installed it and filled out the forms for the DPR. Having looked at the list of controllers on the CIO website i noticed a few shops i know that have CCTV but weren't registered.
Is it a legal requirement to do so, and what are the consequences of NOT doing so.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).