Dead fox in Pemberton road inside river gate

Someone has thrown a dead fox inside the river gates in Pemberton road. The same fox was in front of a house in Wightman road two days ago, just round the corner from Pemberton. It looks like whoever moved it thought it would be easier to chuck it down the road, behind a locked gate, then phoning the council and dispose of it properly. 

Does anyone know who is responsible for collecting dead foxes in Harringay? I tried calling the rspca but gave up  after 20 min waiting on the phone. I guess Thames water will need to get involved as they have the keys to the gate?