Free camping in Gilsland
Try Gilsland, near Haltwhistle, where there is a Roman fort enclosed in a farm.
Free camping in Haltwhistle
For those visiting Hadrians Wall: We stayed in the car park across the road from the Roman Army Museum (near Haltwhistle). There are toilets (locked at night). It’s one of the few car parks in the area without a dreaded ‘No Camping/Overnight parking’ sign.
Free camping near Holy Island / Lindisfarne
The causeway to Holy Island (also known as Lindisfarne) is closed twice a day as the tides cover it. There is a car park on the left before the start of the causeway. There is no staying overnight on the island.
Free camping in Alnmouth
Follow signs to car and coach park in Alnmouth. Car park on sea front is OK for overnighting. There is a charge in the day in summer, not sure about night time.
Free camping in Scremerston
A good spot in the north-east is on the coast near Scremerston (south of Berwick-upon-Tweed): Turn off the A1, go through Scremerston and cross the railway, then follow the coast south, there are several good spots overlooking the sea before the road peters out. Please note that the "Holy Island Estate" has "no camping" signs and that in the near future a height barrier will probably installed on the approach road.