Ok think I got it, confusing myself here, so correct me if I'm wrong,
First terminal - all browns from supply/next light/switch
Second terminal - brown & white plus the blue switched live from switch
Third terminal - all earths
Fourth terminal - all blues from supply/next light
First terminal - all browns from supply/next light/switch
Second terminal - brown & white plus the blue switched live from switch
Third terminal - all earths
Fourth terminal - all blues from supply/next light
