Originally Posted by
heckler
Of course the ultimate situation may be if you are a citizen of the UK/EU - i believe they have somewhat quicker lines with "global entry" type booths. I haven't tried those, even though i'm a dual US/UK citizen. Unsure about the trouble it might cause.. someone once said always enter a country wielding THAT country's passport. Never tried.. but it has to be less hassle than standing in the packed immigration hall for an hour..
On my trip through LHR in May, there was essentially no line to go through the automated gates reserved for UK/EU citizens.