In the UK personal protection is low on the list of rights that the public have, relying on improvised tools when confronted by an assailant. While we are all aware of how little useful equipment the general public are allowed to travel with when flying on commercial airlines, I am wondering if anyone knows of any good items that can be used for self defence and will be allowed through by security. Even flashlights, lighters and keys are being treat with 'High Risk' status.