Do I need a transit Visa at Heathrow if I’m going to change terminals from T3 to T5? I will be travelling to the US on a valid visa [duplicate]

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  • Is there a way to find out if I need a transit visa for a layover in the UK? 2 answers

Can someone help me out here, please? I will be travelling to the US (I hold an F1 visa) via Heathrow (London, British Airways). I have a 3 hour layover at Heathrow where I’ll need to change the Terminals from T3 to T5. Would I need a transit Visa or am I good to go? Thank you.