It's all this damn threads fault...
Seen from the M69:
https://www.google.com/maps/@52.5676874,-1.2740915,3a,37.4y,165.41h,98.36t/data=!3m6!1e1!3m4!1s4DgbRoVlIy16DCfGSvTczg!2e0!7i13312!8i6656
What's going on there then? There seems to be a 90 degree change in direction in that line
https://www.google.com/maps/place/M69/@52.5654876,-1.2733805,166m/data=!3m1!1e3!4m5!3m4!1s0x487744c8bc77a86f:0xad0b424f9bae3be0!8m2!3d52.5265057!4d-1.3309517
Richard