The UKian people owned those contracts. They were selling the contracts. If you haven't checked lately, the UKian people have been "foreigners" since 1775.
The British haven't been told by their god to kill us. I don't recall them jacking airplanes and flying them into buildings. I personally think that we should leave the sensitive jobs to Americans who have passed a rigorous security screening. It's not fail safe, but would go a long way to prevent another atrocity. Again, just my opinion.