I know someone who has stolen stuff in hes house?

Basically i got a simple question i know someone who has a few items they are reported lost/stolen the kindle fire's (i think) and he has like 6 xbox's ipads/iPhones/Sony tablets/Kinects if i report this guy by crimestoppers what are the chances or anything happening to him?
also what could he get arrested for?
i have proof as well he posted it on hes facebook…
We're from the UK and he is 18 years old he has been in trouble before he has a criminal record for Burglary.

Crimestoppers follow up every lead if they feel the lead is genuine. Giving them the person name is likely to have the springing into action if he is already known to them.

Arrest would be on suspicion of burglary and handling stolen goods. Crimestoppers will not need the proof if you can give them enough information.