What do you call these locking handles?

[Stupidmia]

Hi

We are looking to buy new interior lever latch door handles to replace the old ones.
The downstairs toilet and bathroom have those handles that have a knob that locks the handle (I.e. it doesn't have a lower locking bolt that comes out of the latch mechanism).
What is the correct name for these handles please?
Looking to order online as not a lot of availability locally....just don't know what to order so it will be a direct replacement????
Cheers

 

[crank39]

You will get loads of results if you google 'bathroom lever handle sets'

Or try here

http://www.ironmongerydirect.co.uk/

Select 'door furniture'

Then choose 'lever handles on backplate' or 'lever handles on rose' its your choice depending on style or look you're after

Then scroll down and choose your handle, click on it and check if they do a bathroom version