I have a window (uPVC) where the handle moves but doesn't move the latches to lock the window. So it's the internal mechanism that needs replacing.
I'm sure you can buy bits in screwfix but I wouldn't have a clue where to start and usually my dad is good with DIY but is also stumped with this. I'd rather just pay someone to do it! But who do I ask? A glazier?
It's a ground floor window, smallish, but still a security risk so keen to get it done.