Britain can't unilaterally decide to do that. So, a renegotiation is needed.
That's a big problem with Brexit. Some highly visible supporters promoted the idea that Britain will simply be able to dictate new and more favourable terms for everything that happens through the EU framework currently.
It's essentially the same as what Trump is saying -- "I'll deal with China. I know how to make deals. I'll make a great deal" -- With no specifics on what the deal would be and why the other side would accept it.
That's a big problem with Brexit. Some highly visible supporters promoted the idea that Britain will simply be able to dictate new and more favourable terms for everything that happens through the EU framework currently.
It's essentially the same as what Trump is saying -- "I'll deal with China. I know how to make deals. I'll make a great deal" -- With no specifics on what the deal would be and why the other side would accept it.