Just take a ladder. It's not breaking and entering because you're not breaking anything. And it's not unlawful access if you have a right to be there...
Brilliant. That's probably just what they want you to do so they can then justify their existence by arresting you. It will demonstrate just what they want -
man with ladder threat to A380. Someone with a ladder will show that people will commit an offence to get onto the airport. Can't have that. So security will be ramped up so that we all have to go through the full body search, x-rays, no liquids, no leathermans... at any airfield that handles the odd charter or air-taxi flight once in a while, like
Stapleford for example.
Grow up guys. If you are based at such an airport, it seems very low-key security to me.