What was there before? Maybe it was some form of multiple light fitting.
Brian

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The Sofa of Brian Gaff...

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"Fevric J. Glandules" wrote in message
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I guess it makes economic sense to do so now that the tube has blown.

I have partially dismantled the existing fitting.

Do these things have standard mounting holes so that a new batten
fitting would slot into place?

The old one probably dates back a few decades.

Also, why on earth are there no less than four twin-core and
earth cables coming out of the ceiling?

(All the cores are wired together in terminal blocks wrapped
in tape. Looks like a bit of a bodge job).