wrote:

I have just moved into a new house and although the window handles are
unlocked, there are other locks on the sides of the window frames.

See:

https://pbs.twimg.com/media/Dy4QBizX4AEBMw_.jpg

I have ordered two keys but they don't fit as the locks and keys are both
male. Is there a female key that I need to open these windows?

TIA.

We've got those! I fitted them myself to satisfy insurers about 15
years ago. Unfortunately I've lost all but one of the keys and I
can't remember who made them, so I'm not enormously helpful.

--

Roger Hayter