Outside light wiring

[Lostmejunk]

Hi, excuse the ignorance here but I am currently replacing an existing switch with a 2 gang to wire up a new outside light. The current switch has a live, neutral and earth feed as does the new outside light. How/can I wire this correctly? I presume I should bridge between the COM port but how do I wire the new light to work correctly? Standard gang with com, L1 and L2 for each switch. Old switch works fine as you would expect.

 

[westward10]

Can you show a pic of the old switch wiring. If only two wires, excluding the earth are present I suspect there is no neutral.