Hey Andy,
They are the right bulbs! The lamps are by Louis Poulsen and are all 4 pin as above, I think its all this green malarky that LP has jumped onto....
But to me the site advises that the problems with CFLs previously are no more due to a change in design which makes them safe to use with a dimmer and can mimic a incandescent light bulb without causing problems.. such as a fire!
To be honest, I probably will not use the dim function and just have it set to on/off.. but still a nice feature to have!
m