OK the alarm's still going off. Great.
The noise team did actually call me back but were about as much use as a chocolate teapot.
They said they believed that the house was owned by a housing association called Simba Homes, they didn't have an emergency contact number though so couldn't do anything more.
A quick Google search brought up a Simba Homes based in Artillery Place just around the corner, no phone number though.
All the Council said that I could do would be to call them back tomorrow.