An Indian passport holder connecting through Heathrow, London on British Airways (Delhi → Toronto) asked whether a UK transit visa is required.
What the group said:- If you stay within the same terminal at Heathrow, no transit visa is required. Terminal transfers within the same building generally don't trigger UK transit visa requirements.
- Holding a valid Canadian visa stamp (student or work permit) on your Indian passport typically exempts you from needing a UK transit visa — the UK recognizes certain valid visas from Five Eyes-adjacent countries (including Canada) as transit exemptions for Indian nationals.
- Without such a stamp, you would likely need a UK transit visa to pass through Heathrow, even for a short layover.
Takeaway: check both which Heathrow terminal your connecting flight uses and whether you already hold a valid Canadian visa/permit stamp — that combination determines whether a UK transit visa is needed. Always verify against the UK government's current transit visa rules before booking, since terminal assignments and exemption rules can change.