Help with light switch wiring

[plproud]

Hi can anyone advise on this please.
I am wanting to switch the front plate over to a newer modern type but I've no idea what all of the wires are doing and where they should go on the newer light switch.
The switches are 2 gang switches but I've never seen fittings wired up this way before so I've no idea how to rewire them in to the new switch
I've attached a photo of the old switch and wiring and also the new switch that I'm wanting to transfer the wires too
Has anyone seen anything like this before and has anyone any ideas of what goes where on the new switch

Thanks

 

[James]

they are identical switches, except one of them has one half mounted the other way up.

 

[littlespark]

just transpose the markings.... L1 on old switch to Com1, L2 to L11 and L3 to L12
the other switch goes to Com2, L21 and L22

The new switch has an earth terminal, so make sure that is connected to the earth connection in the back of the box.