The equipment in the play area is clearly unused.
It was taken from a secret MI5 warehouse 25 miles away and installed in a hurry by fake police officers.
Google maps colluded in the deception.
In fact, nobody was poisoned, the former spy & daughter have been kidnapped and are being held in an illegal interrogation center commissioned by the Illuminati. It's located underneath the fake playground.
If you look closely, you can spot the handle and hinges on the roundabout. Near the swing, one can still detect traces of bodies dragged across the sand.
What is the significance of the number 25, you may ask. Look up the writings of the 7th book, it's all there.