Heathrow: do I need to go through immigration in the terminal I arrived at?

Yesterday I arrived at Heathrow terminal 4 and waited 2:30 in line for immigration. I noticed that there was corridor which said "transfer to terminals 2/3" (I'm guessing for flight transfers). While in line I was wondering if it's possible to transfer to another terminal and go through immigration there. I assumed that it couldn't get any worse than the line I was in.

Edit: I had only hand luggage.

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Do you have to go through immigration on a connecting flight at Heathrow?

Unfortunately it's not possible for you to go through customs and passport control to meet the person transferring flights unless you're also checked-in for a flight leaving that airport terminal that day.

Do I need to go through immigration for a connecting flight London?

If you're arriving at Gatwick from an international flight and are connecting to a destination within the UK or Ireland, you will need to go through immigration. If your hold bags are through checked or you're travelling with hand luggage only, you can then go straight to security.

How long does it take to get through customs and immigration at Heathrow?

Re: How long does it take to get through customs at Heathrow? Allow between 30 minutes and 2 hours.

Do I have to go through customs if I have a connecting flight?

Many wonder, \u201cdo I have to go through customs for a connecting flight?\u201d This is a common question amongst international travelers, and the answer is usually \u201cno.\u201d As long as you're not leaving the airport, your bags are checked through to your final destination and you have a boarding pass for your next flight, you won ...

ARRIVING AT LONDON HEATHROW Terminal 5 - London Heathrow Airport United Kingdom - Travel video

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