If your former husband owes $25,000 on a court ordered divorce settlement and he has assets in the United States, you can levy upon them to get payment on what is owed you.In order to go about the process, I suggest that you consult with an attorney that does debt collection work to investigate what assets he may have in this country and then go about the levy process. If he does not, then you need to investigate if the U.K. has statutes allowing for United States judgments to be collected upon and if so, what is the process.