The wording for Phase 1 could be taken to mean that yes if it's recreational and you walk, wheel or cycle and it's within 5 miles of your home.....and you don't meet with other folks and you keep social distance if you do.
So no trains, buses or ferries, and I suspect that if the relevant authorities have closed national parks, etc., you could get into bother if you used them.
that lot is from Page 21, fishing is okayed on Page 22.
Page 21....
Seeing family and friends: we are planning in this phase to change regulations to permit people to use public outdoor spaces for recreational purposes, for example to sit in a public space.
We are also planning for one household to meet up with another household outdoors, in small numbers, including in gardens, but with physical distancing required.
We expect no public gatherings except for meetings of two households and only outdoors and with physical distancing.
Getting around: Consistent with the reopening of workplaces set out in this phase, where home working is not possible, businesses and organisations are encouraged to manage travel demand through staggered start times and exible working patterns.
You will also be permitted to travel short distances for outdoor leisure and exercise but advice to stay within a short distance of your local community and travel by walk, wheel and cycle where possible.
International border health measures are set to be introduced.
Page 22....
Sport, culture and leisure activities: In this phase we are planning to allow unrestricted outdoors exercise adhering to distancing measures and non-contact outdoor activities in the local area – such as golf, hiking, canoeing, outdoor swimming, angling – consistent with the wider rules and guidance applicable to any activity in this phase.
It's still all under the avoidance of social contact outwith the folks you live with, and a great deal of care if you have to work, travel or shop beside other folks.
Page 42 says that it's unrestricted in Phase 1 ...
"Consistent with the rules and guidance that are applicable to any activity in this phase:
Unrestricted outdoors exercise adhering to distancing measures.
Non-contact, outdoor activities in your local areas e.g. golf, hiking, canoeing, outdoor swimming, angling."
Having said all that, I reckon if the police decide you're chancing it by setting up camp you might find it awkward.
You might ask them beforehand, but that might be an own goal
If either of you find out it'd be a kindness to let the rest of us know
M