Which dimmer switch for LED bulbs?

Good day, all
I’ve got matching MK switches and sockets virtually all round the house now. Just decorated the kids’ bedrooms and hit a slight snag. I’ve replaced the old 60w tungsten bulbs with new 100w equivalent LED lights

We have dimmer switches fitted according to Dimming all kinds of LEDs Tutorial (include video), however they aren’t working properly. I suspect because the dimmer switches are old ones rated for old loads.

I’ve tried a newer V-Pro dimmer which sort of works, however there are 2 issues – 1) it doesn’t really dim much & 2) the bulb doesn’t appear to get to full brightness, so not ideal.

Can anyone recommend a decent dimmer switch for 15w LED bulbs? My preference would be MK but they don’t appear to do one in the normal MK range.
 
Any ideas? Thanks in advance!