I've been presented an EICR with a code 2 for a combustible DB mounted on combustible materials. The DB is not showing any signs of Thermal effects of overheating, so in my opinion has been coded too harshly and could warrant a C3. It's not installed under a staircase and is not within a fire escape route. Because of the reasons above I personally would deem this as an improvement recommended rather than something that is potentially dangerous.