I decided to have a good read of the home insurance policy whilst looking at cover for bikes and it states that ground floor windows must be protected with ‘Key Operated Locks’ now our windows did not come with locks on the casements and instead I fitted swing locks as shown below

http://www.era-security.com/our-products/?/Windows/Additional+Locks+for+Timber+windows

I suspect this is a question for the insurance company, but there must be others who have these fitted?

All the locks in the link are fine except the bottom which isn’t really a lock.

Make sure your locks are “Kitemarked British Standard 3621:2007” if the policy asks for them too.

Your friendly STW locksmith. 😀