Baffling Lighting Circuit

[Lordy9099]

Hello,

Just been to look at a problem where when his light switch for his front room lights is switched on, the stairs light 3 meters away will not work, though when the front room lights are switched off the stair light works, and is the stair light is on and the front room light is switched on the stair light goes out and the front room lights turn on so the problem somewhere is that the front room light switch is taking power away from the stair light?

Any ideas?

Thanks

 

[Octopus]

Come on Lordy are you finally admitting you are a sparky???????????????????????????