Its NCR 75 - [https://explore.osmaps.com/?lat=55.855530&lon=-4.000102&zoom=10.0000&overlays=os-ncn-layer&style=Standard&type=2d&placesCategory=](https://explore.osmaps.com/?lat=55.855530&lon=-4.000102&zoom=10.0000&overlays=os-ncn-layer&style=Standard&type=2d&placesCategory=)