Allocator - is the M1 there or is it the A1 - Also historically known as AIRFIELD1 as the emergency "Cold War" dispersal field.
You may notice some areas around that road have NO overhead cables, Very Little in the way of trees or bushes near the road - now you know why!!!
I understand a requirement still exists that ALL bridges be constructed to permit aircraft such as Tornados to TAXI under them. Gateshead Council seemingly did this on the western bypass of the A1 before it was opened!!!