UKCA (or CE) marking required for LED ceiling lamps?

Not going to comment on UK standards, but on the safety and grounding expectations:

Does it have this symbol for double isolation on it?

That would define that it's supposed to be wired without ground.

No, no markings.  I know to look out for that one.  It really is as cheap and nasty as I describe it.  I dug deep into the bowels of UK legislation and it seems pretty clear that anything above 50V AC has regulatory compliance requirements: https://www.gov.uk/government/publications/electrical-equipment-safety-regulations-2016/electrical-equipment-safety-regulations-2016-great-britain

Offer it to the altar of the god of unsafe UK appliances: https://www.bigclive.com/

If they don't send me a return label perhaps I will 

Andrew J said:

It really is as cheap and nasty as I describe it.

Perhaps time for sharing some photos ?

I will if they don't ask for it back.  I don't want to unpack it again and risk something breaking.

I've not been following the latest, but I think UKCA might be (or becoming) unessential now, provided the CE mark is there. All a mess. But for sure there should be either CE or UKCA on it, if not both. But I don't have a reference you could point them to : (

We use 5-arm ceiling fixtures, but went with retro-fit, i.e. each stem has an Edison E14 socket on the fixture.

Now big problem with that, is that the LED bulbs with E14, are not as good as LED bulbs with E27. Simply because there's more space for electronics+cooling with E27.

But the traditional multi-arm fixtures are more commonly E14. The solution there was to insert in E27-to-E14 adapters. They don't look too bad, although obviously the bulb will protrude from the fixture slightly.

The adapters that we used came from cp-lighting.co.uk (they seem reasonable, nothing spectacular).

EDIT: Hm, those adapters are out of stock. But I'm sure there must be other manufacturers of those. 

Hehe that would be worth watching! BC is awesome. His was probably the first electronics website I ever saw. 

They’ve used SMD LEDs.  By popular demand, here’s a couple of photos.  I would have to find a safe way to connect those tiny wires to mains circuit wires - there’s a small number of those dunce cap type connectors included and presumably I’m supposed to connect 7 pairs of these to mains wiring in one cap.  The chips are unmarked and there are no parts on the back of that card.  I don’t trust any of this to stick it on a downstairs ceiling underneath our bedroom.  To be fair, I wouldn’t put it up anywhere.

shabaz This is where the ferules you used in your roadtest of the Knipex crimpers and Wago connectors really shine.  That 0.25mm wire is just too tiny for my chubby fingers.