You need a version where neutral required, as you would not have load on it. Then you set up a SmartLighting rule to mirror the switch to the bulbs and the bulb to the switch as well. But this would be only on/off. All the other options above would give you dimming as well.
I don’t know the UK regulations regarding hard wiring lighting fixtures.
@jelockwood might know it. And he can advise with other UK switch options as well.