Possible Issue with UK Level 8 Diplomas

[newdegree]

Have you looked at Liberty University's PhD in Public Policy, PhD in National Security, or Doctor of Public Policy? Liberty University accepts 50% of transfer credits, so it might be possible to get that level 8 diploma evaluated, and maybe they will count it toward their program. You can also get your master's degrees and certificates assessed for possible credits, which might count toward the degree if applicable. They also offer a first responders discount. 
Another option that's not so affordable but interesting is St. Johns University's Doctor of Profesional Studies in Homeland Security 
https://www.stjohns.edu/academics/progra...al-studies

Liberty was actually one of the first programs I looked at... Also, in case you didn't already know, Liberty requires that for transfer credit to count, it has to be at the level of the program being pursued. 

In other words, only bachelor's level classes count towards a bachelor's, only master's courses count towards a master's, and so on. They will not accept any master's degree or master's level courses for transfer into a doctorate. They do offer a few "executive certificate" programs made up of doctorate level courses that can transfer in, however they explicitly forbid any discount to be used by certificate students. That means that they are too far out of my price range.

Have you tried the university of the cumberlands phd in leadership or EdD in leadership? I know they count masters credits towards their doctorates