As part of any insurance policy, you have a responsibility to take reasonable steps to avoid making a claim, and fitting the right lock is a key part of this.
Some insurers have minimum requirements to be aware of, which differ depending on the type of door or window lock you choose. For instance, your main external door should feature either a mortice deadlock with at least 5-levers, or a lock conforming to a British Standard of at least BS3621.
Meanwhile, a sliding patio door should be fitted with an anti-lift device to prevent the doors being removed from their running tracks, together with a multi-point locking system, and windows must be fitted with at least one key-operated lock.
Be sure to check with your insurer to ensure you’re compliant with their terms before fitting any locks in your home.
Look out for the British Standard kitemark
Be sure to choose a lock which is made to the British Standard BS3621, and carries the British Standard kitemark - this information should be clearly visible on the packaging.
BS3621 means that the lock has to have the ability to be dead locked and the key taken away from both sides so no one can gain access or exit the door without a key. Locks bearing this kitemark are often recommended for all final exit doors.