Been to a fair few places now that still had various power and utilities on.
One ward of West Park had fully working lighting etc. The hospital in Moreton in Marsh is still completely wired up with all electric and water working.
Wadkins Woodworking Machinery has the electrics and central heating still operational, all the roller shutter doors still work.
The Courage Brewery in Reading had a lot of powered up stuff still including the large goods lift.
North Leamington School still has power being fed to the ground floor despite the building being in a very derelict state.