Not sure if any member is close to you, but we will soon find out.
MICC is a fairly specialist area now. Not used so much nowadays as a new install.
If the core snapped right at the pot (I still know the lingo!) it’s going to need replaced.
Looks like it’s buried in plaster on a brick wall.
What do the switches control? If they’re all in the same room, likely solution is to have only one switch, controlling all lights and taking that length of cable out of circuit.
Or remake the end of both cables, bringing the switch up the wall a bit.
Or remake the cables high up on the wall, fitting in a box to use as a joint box with a blank plate… then extend in regular t&e cable back down to switch.
Have never know MICC to be used domestically except as a sub main up a tenement building in Edinburgh.
Was my brothers flat, and all the sub mains were bare copper MICC clipped surface up the stairwell. Amazing neat job.
Edit. Just saw Dusty’s reply….. Is that the celeb spark, Delroy? Love to see him work on MICC on YouTube… lol