No need for a separate GPS - smartphone is always with you, you will take power banks with you as well
And I get bored after 2 days in wilderness unless there is something exciting like fishing or hunting
And I would think my habits mimic those of 95% of UK population
I would, however, recommend an emergency beacon - 15 or so years ago I was driving near Snowdonia and saw a motorcyclist lying on the road. In panic, I stopped my car blocking him from traffic on his side of the road so that they don’t run over him and tried calling for an ambulance, but we were in a small valley, so there was no signal. Then his mates arrived. I run on top of the valley (about 10-20 metres, but running uphill is tiring), then was running around trying to get a signal. I hoped emergency would be able to identify my location, but they could not. I run back, one guy with GPS gave coordinates, I run back, but they still could not pinpoint me. I run down, managed to identify by GPS the road between two villages and approximate location between them and then ambulance knew where we were
It took about 45 minutes for them to arrive… Nowadays emergency works much worse even though I can pinpoint my location by 3word coordinates - if you fell, like that biker, you can only push a button to ask for help