Infra-red bounce from number plates has always been an issue with CCTV Cameras. Some cameras will allow you to view number plates during daylight hours but as it gets dark and the camera infra-red switches on so the number plate appears as a white rectangular box.
Digital Direct Security (DDS) have introduced a new model to their extensive range of cameras which will allow you to view number plates. Their new model KS-848VR (which has a resolution of 540TVL, SONY SuperHAD CCD with SONY DSP together with 8-40mm Auto-Iris Lens) will allow you to view number plates upto 25m away with head-on headlights.
This CCTV Camera is a 1/3″ SONY SuperHAD CCD based unit with Day & Night viewing and a Vari-focal 8-40mm lens for long range applications. For night use the camera has 8 pcs (Hi-power) and 22 pcs (standard) IR LEDs giving it a Night Vision range of ~ 70m (manufacturer claims 80m).
For more details, see
http://www.digitaldirectsecurity.co.uk/long-range-ir-and-read-number-plates.html
DDS supply all types of CCTV cameras, CCTV DVR and customized CCTV System. They have an excellent team of engineers for both sales and after sales support. They also offer remote helpdesk for configuration of remote access of CCTV DVRs and Network routers.