It's not a pond, it's the River Colne.
Runs right through the moor. It's very shallow in places and even in the middle nephew Harry wades through it. Willow was a bit unsure at first but now she just dives straight in.
Ooh we tried Virginia Water once too but those mad setters kept vanishing in the woods so we had to give up. I may go back just with Willow though (lots of geocaches in there ).