Original statutory instrument:
http://www.legislation.gov.uk/ssi/2020/103/regulation/8/madeAmendment effective today:
https://www.legislation.gov.uk/ssi/2020/164/regulation/2/madeSection 8 of the original lists exceptions to staying at home
"a reasonable excuse includes the need" is changed to "a reasonable excuse includes"
So the police can't challenge whether you need a particular type of exercise
"(b)to take exercise, either alone or with other members of their household," is changed to:
"(b)to take exercise—
(i)alone,
(ii)with members of their household,
(iii)with members of one other household,"
And an extra reasonable excuse is added:
"(o)to take part in outdoor recreation—
(i)alone,
(ii)with members of their household,
(iii)with members of one other household.”