Lock Barrels

I fitted a couple of new doors to the Defender 90. I need to change the lock barrels. I have the lock barrels but I need the part that the replacement barrel fits into. It’s the part the pin on the lock barrel goes into.
What’s the name of that part as I can’t find it and it’s very frustrating Grrrrrrr. Pic of barrels? What’s the name of the part they fit into as I’m missing one

If you say please and thanks people might respond.
LZ is a community and not somewhere to just demand information

I'd ask your question over here.
https://www.landyzone.co.uk/forum/defender-90-110-130.7/