how do i switch from an ancient switch to a new switch?

[dave colledge]

Hi All , I am trying to change a 2 gang light switch in an old house and i need some advice on how to wire the new switch so it matches the function of the old switch

 

[Fleeting]

The single red with the bare copper linking bar goes into Common.
You then want a link across to the other Common using a piece of insulated wire, similar to what you have but don't reuse the bare wire.
The other two go into each of the 1 WAY terminals so black in one and red the other in the same orientation as the old switch.

 

[ProDave]

The red wire on the old switch that goes to the 2 middle terminals and is presently strapped with a bit of bare wire, goes to both "COMMON" terminals on the new switch, but don't re use that bit of bare wire, use a new bit of red or brown insulated wire. It is important you mark this particular red cable in some way as it has a very different function to the other 2.

The other red and black wires each go into one of the "1 way" terminals of your new switch.

EDIT: @Fleeting is a quicker typist than me.