The posted coordinates above will bring you to the Stage 1 plaque. You will need to use some of the numbers mentioned on each blue plaque to help acquire the coordinates for subsequent plaques and the final location.
Stage 1: Note the 1st year mentioned and call it A.
Stage 2 coordinates are N52° 15.(A - 1216) W007° 06. (A - 1519)
Stage 2: Note the 1st year mentioned and call it B.
Stage 3 coordinates are N52° 15.(B - 1070) W007° 06.(B - 1460)
Stage 3: Note the 1st year mentioned and call it C.
Stage 4 coordinates are N52° 15.(C - 1250) W007° 06.(C - 1637)
Stage 4: Note the 1st year mentioned and call it D.
Stage 5 coordinates are N52° 15.(D - 1317) W007° 06.(D - 1727)
Stage 5: Note the 1st year mentioned on the left plaque and call it E.
Final coordinates are N52° 15.(E - 1344) W007° 06.(E - 1538)
Note: The hide location can be very busy during daylight hours - use your best stealth techniques.