Does anyone know what ever happened to the terrapin in the pond? Apparently it has been or will be killed as part of a 'rapid elimination' of non-European species in the country, but I don't know what the current situation is. A very sad situation and a wicked plan. I am sure the Cedars nature centre would have had no problem adopting the little animal.
Update - there are two terrapins which were sighted alive and well in 2020, however Broxbourne Council removed carp from the pond so I would not be surprised if they remove the terrapins too at some point.