Det här handlar om USA snarare än Storbritannien, men Här är en relevant artikel om behandling på Stanford Hospital för passagerare som reser på Asiana Airlines flyg 214 , som kraschade strax innan landningsbanan på San Francisco flygplats.
Från artikeln:
And when they were healthy enough to leave the hospital, they couldn't simply be discharged because they had not yet cleared U.S. Immigration and Customs Enforcement.
"They came straight from the runway," Weiss said. "They weren't officially in the United States yet." Adding to the complication was the fact that seven were minors unaccompanied by parents.
Sitting in open patient rooms and lounges, social workers, translators, Red Cross and customs officers, as well as a representative from Asiana Airlines, worked past midnight clearing patients for release.