Based on my recent experience in the Scottish highlands:
Eating out, one place in Fort William had social distancing in place and I had to wait outside until space bacame available (on a chair underneath a canopy outside, and could order a drink whilst waiting, so no big deal). Most places (serving evening meals) required signing in with the covid app. No issues with my pre-booked B&Bs (at Kinloch Hourn and Inverinate). After having to reschedule on the fly I had to stay a night in FW and was able to walk up to a place with vacancies which then offered me a room, no issues with covid. At breakfast in the Travelodge in Glasgow, table service only.
Eating out, one place in Fort William had social distancing in place and I had to wait outside until space bacame available (on a chair underneath a canopy outside, and could order a drink whilst waiting, so no big deal). Most places (serving evening meals) required signing in with the covid app. No issues with my pre-booked B&Bs (at Kinloch Hourn and Inverinate). After having to reschedule on the fly I had to stay a night in FW and was able to walk up to a place with vacancies which then offered me a room, no issues with covid. At breakfast in the Travelodge in Glasgow, table service only.