Home CCTV security & video 

Good looking CCTV camera
cctv42 (Good cctv info)
Hendrys cctv Padington
Link 4

For a 4 camera CCTV with sound will need the list as bellow:

1 x 4CH DVD player  at £150 + vat from cctv24
1 x 1TB western digital hard drive £100 +vat from cctv24
4 x 72HIR700VF Colour IR CCTV Camera 2.8-12mm V/F     
      Lens up to 50m IR 700 TV Lines £79.95 from Henrys
      cctv Padington £80 + vat each
Cat 5 cable
4 x Video & Audio baulns from eBay £6 each
4 x microphones eBay from £6 each
1 x 16 way 12volt power supply with battery back up.£60 + vat

£750 inc vat  with sundries.