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I tug tested the connections first, all seemed solid. Also, because the connections aren't in line (they all go in to the same side of the wago), the cables go into the choc box throught the same hole. I then taped the cables together so if you pulled on the single length of T&E, you wouldn't be pulling on the wago connection, if that makes sense.
stevo_com
You're very unlikely to find sleeving on switch lines in older properties. It's like commenting code or writing user manuals, absolutely should be done but quite often doesn't unless someone is forcing it. The electrical trade is quite secretive though, there's a kind of pride that they can navigate the perils without any help.
Maintenance free connections like your choc box one are fine as long as you've used Wago's (or similar) screwed terminals are not maintenance free because AC pulsing can cause the screws to loosen. The wires do also need to be secured to make sure they couldn't pull out if for example someone tried to pull on that wire without seeing that connection. Wago make some nice boxes specially for the purpose.
Earth sleeve, it always feels good when you have the right size earth sleeve to hand.
One thing a lot of people do which is not recommended is twist earth wires together, it can cause problems over time if you have to disconnect and rejoin the wires because the copper work-hardens.