查阅
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!