1, More than One circuit protected by a single breaker,
2, ELV and LV cables being run and grouped together,
3, CU pop riveted, so no means of access.
4, Neon indicator on CU which could not be disconnected because of above
5, All circuits joined by snap on and pull off connectors under beds, in cupboards etc...
6, Cables run in polystyrene
7, A spurred socket wired in speaker wire
8, No means of testing the fridge circuit as the fridge is a fixed appliance and can not be moved.
9, No earth bonding connection to chassis (this is a requirement)
10, Curtains drapes dangerously close to light fittings
All these things are easily fixed.
http://www.youtube.com/watch?v=c6ILYnp9_44