ZM your link shows there is no right to a UK passport and UK citizens can be left stateless in certain scenarios,
"British citizens are not entitled to a British passport. The passport does not confer
citizenship; it is merely evidence of it. Passports are issued at the discretion of the
Home Secretary under the Royal Prerogative and can be withdrawn through the use of
the same discretionary power"
"The Home Secretary may make an order to deprive a person of
British citizenship status in any of the following circumstances:
• The Home Secretary considers that deprivation “is conducive to the public good”, and would not make the person stateless
(s40 (2); s40 (4));
• The person obtained his citizenship status through registration
or naturalisation, and the Home Secretary is satisfied that this was obtained by fraud, false representation or the concealment of any material fact (s40 (3));
• The person obtained his citizenship status through naturalisation, and the Home Secretary considers that deprivation is conducive to the public good because the person has conducted themselves “in a manner which is seriously prejudicial to the vital interests of the United Kingdom, any of the Islands, or any British overseas territory”, and the Home Secretary has reasonable grounds to believe that the person is able to become a national of another country or territory under its laws (s40 (4A)).
In the second and third scenarios, deprivation of citizenship is
permissible even if the person would be left stateless."