Sewage Works by Maple Cross: TQ 040 930.
The exact point at TQ 040 930 was not accessible - fenced off from public access. The closest point achievable was TQ 041 930 (ref. Garmin Etrex 10 GPS), which was acheived from the NE side of Springwell Lake.
Location
TQ 040 930
51° 37' 34.3776" N
0° 29' 56.2704" W