Hi, I hope this my question is relevant to this thread. I am traveling between ATL and HYD on BA with a 3hr lay hour in LHR. My connection is within the same terminal. I am an Indian National with a valid US visa stamped in my passport but I am traveling from USA more than 6 months since I last entered it. Do I require an airside transit visa or am I allowed to Travel without a visa? Any help is highly appreciated as I travel in 2 weeks.