2 way 2 gang conundrum

[Notadecor8ter]

I'd like to control hallway from upstairs and then downstairs on landing.

Hallway i've got a light switch for outside front light.

I can't for the live of me work out how (or if) i can control upstairs with this setup. The front light was in when I arrived at the house.

Upstairs is a single 3 core and then 2 core to light upstairs.

https://drive.google.com/file/d/0Bx6--fM-4q6VNWpfdGEwblRfTEk/view?usp=sharing
https://drive.google.com/file/d/0Bx6--fM-4q6VY1JENUZjWGlFT3M/view?usp=sharing

 

[sparkwright]

Clearer photographs of up and down switches AND better descriptions of what you want to do would probably get more responses from the forum.

 

[ban-all-sheds]

I'd like to control hallway from upstairs and then downstairs on landing.

So does neither light currently have 2-way switching?

Hallway i've got a light switch for outside front light.

Jolly good. Is it one of the gangs in the switch you show?

I can't for the live of me work out how (or if) i can control upstairs with this setup.

You can't - you'll need a new switch downstairs and a new one upstairs, and 2 x 3-core and earth cables running between them.

You should read these, 2-way switching is quite straightforward:

https://www.diynot.com/wiki/Electrics:Lighting-Circuit-layouts

https://www.diynot.com/wiki/Electrics:Two-way-lighting​

Upstairs is a single 3 core and then 2 core to light upstairs.

I don't really understand what that means.