Should be illegal to do so. With a stiff sentence.
A few months ago, I read about another Victoria Cross that was auctioned off. It had been awarded to an airman whose Lancaster bomber had been hit over Germany, setting one of its engines on fire. He crawled out onto the wing (while they were still a couple of miles up) with a fire extinguisher and tried to douse the flames. Unfortunately, a German fighter began attacking them and he was forced to jump off the wing to avoid the machinegun fire. The rest of the crew then bailed out of the crippled bomber, and survived the war in a POW camp.