Do i need UK transit visa while having valid H1B VISA?

[Ricky27]

Hi,

1) I have an INDIAN Passport and have a valid H1B US visa for next 1 year till July 2020.

I am planning to visit India in Dec 2019. If i take British Air(flight) which makes a stopover in London(LHR); Do i need to have UK transit Visa?

 

2) If i still need UK Transit Visa, can i apply at London Airport (LHR) or i should take it while in US?