Changing a kitchen spotlight

Hi there.

I'm trying to change a kitchen cabinet spotlight (GU10 I think?) and can't figure out how to actually get into it. Does anyone recognise this kind of fitting?

It doesn't seem to have a little pinchable circular wire clip thing, like the ones in the ceiling. And I don't seem to be able to push it in or twist it.

Pic here: https://imgur.com/a/dqStsbY