Great stuff problem solved, checked downstairs lounge light and found 3 neutrals of which one had become loose, reconnected and hey presto landing light works.
I have a problem with my top landing light, it doesn't work! It is a typical setup double switch downstairs and the same upstairs. I have replaced the cieling rose and lamp connector, still no joy. I have checked the wiring at the rose, there is 1 red and earth in the same outer sleeve ( switched li...