Welcome to the London International Airport. While you're visiting, picking someone up, or waiting for a flight, you can do some geocaching!
The cache is NOT at the posted coordinates. Do not go there. You will be arrested if you do.
After completing the London Airport Adventure Lab series, you will receive a clue after completing each one.
Put together the clues and you will obtain the final coordinates of this bonus cache.
The bonus cache is found at N43 01.ABC W081 09.DEF.