My mum and a friend she knew all her life lived in a place just like that ( think it was Mount vernon view, it was by the Thors hammer by the old Royal hospital I think) remember her telling a story about the rats that where the size of small cats. The men of the road would kill them and put them all along the window sills of the road to show the landlord when he came calling for rent. The mother of my mums friend whose leg was in plaster woke up to find a rat chewing on the plaster cast. The toilet at the end of the road that was for the whole street didn’t help.