I do the 4 VERY easily... Im in and out of there around 1-2x a month...I just dont keep the boarding passes..and my passport does not get stamped when I enter the UK... in fact, I dont even use one to get in.. Euro ID card but it means I still have to stand in these ques which can cause quite some delays....

BUT! Thanks for the tips though, I will keep a look out for it.... ^