Any ideas how to remove these upvc handles please?

[inosense]

Hi All, hope you can advise please, I'm stumped.

I have these handles on my windows, some are coming loose and couple have dropped off but there's no obvious way to remove them, all screws are hidden, any ideas?

And any ideas on where to source replacement handles from please.

Photos are attached.

Thank you!

 

[footprints]

New one on me, I would try fitting the key to see if the handle can be rotated more to dislodge it there does look like a clip or tab (broken on 20221109 but intact on 22021109) that might be a clue.
Try sending a pic to these people.

Cockspur Window Handles | Cotswold Cockspur Handles | Securistyle Window Handles | Cockspur Night Vent keeps | Cockspur Wedges

In Stock Now - Cockspur window handles for older type uPVC windows from WMS, Avocet, Securistyle and Trojan. Various stack heights available in full range of colours. Friendly staff ready to help. Buy securely online, instore, by phone or tablet. Check our measuring guide if you are unsure what...

www.handlesandhinges.co.uk

 

[inosense]

Thanks for your reply @footprints, I'll give that a go