According to British Cycling we should stay local:
"What do you mean by local?
We know many of you will want to know what is meant by 'staying local'. The Government’s definition of this is stated as ‘your village, town or the part of a city where you live’.
We understand that this definition is particularly restrictive for cycling, and we are working to seek further clarification on this. We will provide a further update as soon as we are able.
In the meantime, we recommend that you follow the advice to stay local, ride well within your ability and ensure that you are self-sufficient."
I don't fancy just riding round the streets of Gedling. All that speeding traffic! Let's hope for some sensible clarification!