@ CrazyFanSuku - This is not about Vivian and he is not always promoting the show yaar. Its rarely we get to see his interview.
But this is about Suku's rank and she is not in high ranks because of less screen space in show and no interviews/articles about her.
Screen space I can't comment if it is as per the story track or she wanted very less screen space. Coming to interviews/articles nothing stops her from giving an interview right. I know she is in London, but obviously she can give a telecon interview or a net interview if she wants to. I am sure media will not say that they won't accomodate.
After all Ashish and Ekta Kaul have also communicated via media when they were there in London (ofcourse a couple of them were disturbing) but still they did give an interview.