At Terminal 4, security can be a mixed experience, with a current traveller rating of 7/10. Be prepared for potential delays, as recent visitors have noted lengthy lines, and unclear signage regarding which electronics need to be removed from bags. Fortunately, new bag scanners have been installed, allowing you to keep your laptop and larger electronics inside your bag, which may help speed up the process. Make sure to follow the signs to the security area as you navigate the terminal, and plan your arrival accordingly to allow for potential waiting times.
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User Tips
Crowdsourced tips for Security at London Heathrow Airport - Terminal 4
There was a long line at security. The signs were not clear about what electronics needed to be taken out of our bags. Almost every bag had to get searched manually which took ages.
New bag scanners, you don’t have to take out your laptop or electronic.
It was really quiet when I visited too.
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