Varilight 'Impulse' range

http://www.varilight.co.uk/switches-and-sockets/impulse-switches.html

Does anybody know how the modules are attached to the faceplate?

I wanted to order a custom mix of dimmer and switch modules (which they support), but when I asked about having 3 modules on a 4-gang plate because I wanted to put an indicator lamp in the 4th hole they said "no problem, but it would be non-standard and therefore not covered by the usual warranty."

Rather than argue the toss with them I thought I'd just get a fully populated one, and remove one of the modules myself....

If they are the same as the other ranges, they are riveted.

Edit - looking here: it looks like there is a plastic retainer behind it... hope this helps!