Originally Posted by joethekay

There are two exit doors from the immigration and customs area that empty into the lower level arrival hall of terminal 5 where you can wait along with the other people waiting. Also, there is a camera feed of the people exiting the customs area so you may be able to spot them before they see you. The arrival board shows which door they should exit, Also there is convenient parking at terminal 5. Go down the stairs to the arrival hall.