Legal father for paternity and child support is not the same as legal father for citizenship.
A bigamous marriage is “a nullity” (did not exist) and under the 1948 BNA only legitimate children (children of mothers legally married to UK subjects) become UK subjects at birth. Barry was not such a child, as stated to be strongly suspected by the INS when the US threw his father out of the US. So if the UK would not recognize Barry as a UK subject, Barry is not a dual citizen but only a US citizen through his single mother.
The Bastard Protocol.
LMAO
Who knows, you could be right.
I don’t disagree with any of your logic, reasoning or predictions.