Windows are a popular point of entry for burglars through breaking glass or just being left open.
If you are replacing windows, take the opportunity to install windows certified to British Standard BS7950 Windows of Enhanced Security and consider using laminated glass in ground-floor and accessible windows such as those above a flat roof.
Ground floor opening windows and easy to reach windows such as above a flat roof or near a drainpipe should have locks unless used as a fire escape in which case laminated glass still provides security. Even small windows such as skylights or bathroom fanlights need locks. If a thief can get their head through, with a bit of effort the body can follow.
Click here to see a list of SBD approved products