Perhaps this will help the ill-informed conspiracists of the forum (though it’s likely to fall on blind eyes I realise…)
Main duties
A British consulate will:
register births and deaths;
handle child abduction cases;
issue passports, including in an emergency;
deal with forced marriages;
help Britons who are detained or imprisoned;
help Britons who have fallen ill;
help Britons who are the victims of crime;
inform British nationals of any risks posed by visiting a country.
https://www.inbrief.co.uk/immigration-law/embassy/
While definitely within the job description of the British Consulate, dashing from Lisbon to Praia da Luz seems to be outside the duties of the British Ambassador.
Ambassador Duties and Responsibilities
Meet with Foreign Leaders. One of the primary duties of an ambassador is meeting directly with foreign leaders and representatives. ...
Negotiate Agreements and Treaties. ...
Monitor International Situations. ...
Direct Foreign Service Staff. ...
Oversee Foreign Aid Projects. ...
Support Foreign Visits.
https://www.jobhero.com/job-description/examples/marketing/ambassador