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Grumpy_Git-
Are you sure about that? I'm no expert on the innards of LED bulbs, but I thought they contain LEDs which run on 240v, albeit with some gubbins like a capacitive dropper or a switch mode driver.
Anyway I'd rather the whole lot was user accessible/replaceable, having had to dig out dodgy transformers at our last place.
Fox
In my experience the problem with cheaper transformers/drivers is that they can fail prematurely.
I would always go mains for that reason if possible, so I'd go GU10 personally.