Uk - Wiring double dimmer switch

[LeeSpr7]

Hi All,

How do I wire my new double dimmer switch?

I currently have 2 lights in my living room operating off a double switch.

 

[littlespark]

Same as the existing switch.
The browns in L1 go to L1 on each switch. L2 is unused on both and the looped brown across the Cs are looped across the wiggly line marked terminal in the middle.

 

[brianmoooore]

As above. 'Wiggly line' terminal on the new switch is COM on the old.