Brixton is statistically the most dangerous place in the UK. Does that mean you'll get stabbed if you go out there for a night out. Probably not. Does it mean you have a higher chance of getting stabbed then anywhere else in the country?   YES !
Anyway this should cover everything..
Bus stops – keep your personal belongings close to you and valuables out of sight in busy streets. 
Phones - don't use a mobile phone close to a railway or underground station. Be aware of who's around you and avoid making unnecessary calls. 
Bags - wear shoulder bags across your body so that they open on the side facing you. Don't leave your bag open or carry it over one shoulder. 
Wallet and keys- never keep your wallet in your back pocket. Keep it out of sight in an inside jacket pocket. Carry your keys in your pocket, separate from your other belongings. 
Cash - don't carry large amounts of cash with you and be aware of your surroundings when using a cash point machine on the street. 
Jewellery - avoid wearing expensive (or expensive looking) jewellery on show. Keep it concealed when in public places. 
Tickets - don't buy tickets from ticket touts as this can fuel the local drugs market. 
Routes - always know where you are going and plan your route in advance. Avoid short cuts and try to keep to main roads. 
Personal alarms - you could consider carrying a personal attack alarm. 
Reporting – if you are a victim or witness to a crime, report it to the police (999) in an emergency or Crimestoppers (0800 555 111). 
Key contacts
Police (emergency) - 999 
Lambeth Police Control Room (non urgent enquiries) 020 7326 1212 
Victim Support - 020 7820 0007/8 
Crimestoppers - 0800 555 111 
Lambeth Council – Community Safety Team - 020 7926 2733 
Lambeth Council - 020 7926 1000 
Police stations
Brixton Police Station 
367 Brixton Road, Brixton, London SW9 7DD 
020 8649 2025 (24 hrs) 
Cavendish Road Police Station 
47 Cavendish Road, London, SW12 0WL 
020 8649 2625 (10am - 18pm Mon-Fri) 
Clapham Police Station 
51 Union Grove, Clapham, London SW8 2QU 
020 8649 2525 2625 (10am - 18pm Mon-Fri) 
Gipsy Hill Police Station 
66 Central Hill, London SE19 1DT 
020 8649 2325 (8am - 11.30pm Mon-Fri) 
Kennington Police Station 
49-51 Kennington Road, Vauxhall, London SE1 7QA 
020 8649 2525 (24 hrs) 
Streatham Police Station 
101 Streatham High Road, Streatham, London SW16 1HT 
020 8649 2225 (24hrs)