Since the Southwark Noise team would want to know the property it's coming from, and the police may be able to reduce the noise (or vibration) somehow if made aware it is causing a disturbance, it may be worth calling in at the police station in the first instance or calling MPS's property services.
Hi- I live on trinity street too, my flat backs on to the police car park. I hear the noise all the time too, like a heavy duty generator of some sort. i walked down trio place and think the noise is coming from the building opposite the car park. I'm going to give southwark council noise line a call, but will also try asking at the police station. It's not too bad with all the windows closed but come summer it will be such a pain!!
Is it a humming noise you hear? I live in Bath Terrace and recently at night I can hear a humming noise and its really annoying.
I've woken up @ 5.30am and found it difficult to get back to sleep due to this sudden outburst of machinary humming sound, usually last between 10-60 seconds and then goes quiet for about a minute or 2 and comes back again.
Its fine today as a Sunday, would make me a very unsocialable person if it was a Monday morning, I've got some earplugs somewhere!
I am in bartholomew street and the low background hum has seemed to me starting since the school had its new wing built, I notice it from 2am when traffic gets quiter very irritating, If I feel well enough I am going to get up and wander down to the new school bit and see if I can pinpoint it from there.
Its like one of the refridgerating vans that have a generator to keep food cold..