INFORMATION:

RAF Dalton to the east of theA1(M) exit junction 49 for Thirsk. Turn off the A168 at the Topcliffe bypass for Dalton. I came in from the east A19, on minor roads over the main line railway.
OS Ref: SE438762
You can use the Ordnance Survey 'Get a Map' and follow the instructions. Copy and paste the map reference.
The above grid ref. will show you where I started.