I am Saket Patel, an Indian national, studying in France. I have French long stay visa and residence permit (social security). I need to travel to UK for a meeting/conference and I do not know if I need a separate visa for that purpose.  Kindly help me out and let me know if I can travel there with these documents or do I need to apply for visa separately?
I'm an Egyptian citizen, who holds Schengen visa and stay permit in Italy. Can I go to UK for some days with my stay permit and Schengen visa?
My wife is an Indian national with an Indian passport. She holds an indefinite leave to remain in the UK (permanent residence card). Does she need to apply for a Schengen visa before travelling to France or any other Schengen countries?