Help sourcing 3/4 inch 1/4 turn insert for bath tap

Hi all,

Thanks in advance for reading this.

My pump is going off every 3.5 minutes, and there's a drip from my bath tap which I suspect to be the culprit.

I got my plumber out and he showed me that my insert is uncommon in Ireland. I'm hoping not to drill holes in wall and not having to change out the taps.

I'm looking to source 3/4 inch 1/4 turn insert for both bath taps (just encase). See above pic of my insert. I'm aware there's different variants again in terms of length, teeth etc etc but failing miserably to source something identical.