Broken tap head

[philipp]

After some advice or suggestions on how to repair this tap head (if its even possible)? Half the inner collar has snapped/come away so the tap head no longer secures to the valve. I've scoured ebay, aliexpress, google, etc but cant find a like for like replacement anywhere. See pics below for a better idea of what i'm talking about.
I tried using some epoxy putty to build up the wall/collar but this didnt work. Is there anything i could use to bond the tap head back to the valve? I know this isnt a good ideal but if it lasts a year or two, i'd be happy, as we'd probably be looking at a new bathroom in a few years.

 

[RandomGrinch]

If anything will do, you could count the splines on the cartridge and have a search for an "n spline tap head"

 

[Harry Bloomfield]

A tap refurbish kit, comes with cartridge, and head to fit, but would not match.

You might be able to drill down the centre of the splined spindle, tap it and use a screw through the head.

Finally, if all else fails, and you practicality beats aesthetics, a small pair of mole grips, permanently clamped on - would allow the tap to be used, until the refurb.

 

[philipp]

Cheers
I think i've found some similar replacement tap heads on ebay. Will order 3 and replace them all.