Originally Posted by
B747-437B
You are also committing a criminal act in the UK by making a false declaration regarding luggage. Do NOT try this.
My (slightly more legal

) strategy is to leave my carry-on bag with a (trustworthy

) friend/family member who is dropping me to the airport and ask him to wait with the bag far away from check-in. If the agent doesn't see the bag, they probably won't ask about it/weigh it.