Just thought it would be worth mentioning here that information on the goings on locally, from increases / decreases in crime, to helpful workshops and social gatherings with the local Safer Neighbourhood Team. These can be kept up to date with by following them on Twitter.
For any Twitter users, it is well worth following the account to ensure you are made aware ASAP regarding and threats or local issues.
https://twitter.com/MPSForestHill
UPDATED
Just updating the main post to share this info page from the police which shows how the borough is divided up between the teams, as I know this was questioned.
http://content.met.police.uk/Page/AllServicesSearchResult?q=se23&Search+this+site=Find