From Roader's Digest: The SABRE Wiki
|From:||Dishforth Airfield (SE371722)|
|Length:||1.2 miles (1.9 km)|
|Route outline (key)|
The number is known solely from the blue route confirmation sign used on the route, which, however, refers to it as A168. As a result, the existence of this number is disputed: it could just be a spur of the A1(M).