Haha, it's difficult to explain on here.
The vicinity you marked is North Middlesex CC. They have 3 squares.
There is then our ground, which I've marked.
On the right of that is North London's 2nd ground, which is really really small.
To the right of that is Crouch End Calthorpe's ground.
Behind our ground is North London's 1st Ground. It has 2 squares, but they only ever use one on a Saturday.
There is then a ground behind the school, which belongs to Hornsey CC (our auld enemy lol!). They've just been promoted to the Premier League.
Hopefully that goes some way to explaining things, you really need a walk around tour of the area to understand everything!!