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英国大使馆信息:
You should apply for a Direct Airside Transit visa if you arrive in the UK on a flight and leave again without passing through immigration control.
Exemptions
You don’t need a visa if you have one of the following:
a visa for Canada, New Zealand, Australia or the USA (this can be used for travel to any country)
我的问题是: T4转T5,T5转T5,都属于 without passing through immigration control.吗?
谢谢!
You might be eligible for ‘transit without visa’ if:
you arrive and depart by air
have a confirmed onward flight that leaves on the day you arrive or before midnight on the day after you arrive
have the right documents for your destination (eg a visa for that country)
One of the following must also apply:
you’re travelling to (or on part of a reasonable journey to) Australia, Canada, New Zealand or the USA and have a valid visa for that country
you’re travelling from (or on part of a reasonable journey from) Australia, Canada, New Zealand or the USA and have a valid visa for that country