One was probably approx 200m. We both turned to the right to avoid (so probably not that big a deal).
One a LOT closer - certainly less than 200m. Looming large in the windscreen and necessitating a steep turn to the right to avoid
. Scary stuff.
Could probably have filed an 'AIRPROX' but there didn't seem a lot of point. It just reiterates the need to keep a good lookout.
I spend quite a bit of time over Essex, near Stapleford which is incredibly busy with training flights heading out to Hanningfield reservoir to practise. And the gap to the west of north weald between the STN zone and the City zone gets very congested.