From the Government web site:
1.1 What can I do that I couldn’t do before?
As before, you cannot:
- stay away from your home or your support bubble household overnight - including holidays - except for in a limited set of circumstances, such as for work purposes
1.7 Are there restrictions on how far I can travel for my exercise or outdoor activity?
No. You can travel to outdoor open space irrespective of distance, as long as you can return the same night and do not put others at risk because of services you may need in the time you are away. You should continue to avoid using public transport and should cycle, walk or drive wherever possible.
If visiting other parts of the UK – Scotland, Wales and Northern Ireland – you must adhere to the laws and guidance of the devolved administrations at all times.
1.10 Are day trips and holidays ok? Can people stay in second homes?
Day trips to outdoor open space are permitted as long as you can return the same night.
You are not permitted to stay overnight away from the place where you or your support bubble are living - for a holiday or similar purpose - in the UK or overseas.