I was taking the kids for a walk over Wanstead Flats last Sunday to look at the remains of the anti-aircraft gun emplacement when we stumbled on this rusty old metal box poking through the grass.

The boys got excited thinking it was an arms stash – I’d just been telling them about the ‘stay-behind’ brigades which had excited their imaginations.

They were unimpressed by the concrete platform now overgrown with trees – I think they expected to find a rusty old canon. So I took them on to look at the barrage balloon posts again.

But my youngest got distracted by this tree that he thought could make a decent home if you ever needed to hide out in the park.

There’s a great article from the Wanstead Parklands Community Project about the wartime activity in the area.