Can you twist the silver thing with respect to the black thing? Hopefully popping off the cover and then access the light
https://www.amazon.co.uk/dp/B075MG37VZ/
this would suggest yes
What do you know, it actually was that simple.
It was on very tight and I hadn't wanted to break it, but then it did unscrew.
Thanks for the advice and recommendations.
@lf started
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Can you twist the silver thing with respect to the black thing? Hopefully popping off the cover and then access the light
https://www.amazon.co.uk/dp/B075MG37VZ/
this would suggest yes