Change of Name
If you wish to change your name, Danish law requires you to apply for the name change in the country where you reside, if possible.
Please see (in Danish only): Navneændring ved fast bopæl i udlandet (Danish Agency of Family Law)
Registering a name change in denmark
In Denmark, it is the municipalities who, via the National Register (Folkeregisteret), are responsible for maintaining the information in the Civil Registration System (CPR). Therefore, you must contact the municipality where you last resided or where the registration of your details in the CPR took place in order to have your name change recorded in the CPR.
Each municipality determines what documentation it considers sufficient to register a name change from abroad in the CPR. The Embassy therefore always recommends that you ask the relevant municipality exactly what documentation they require in order to register your name change.
Please see (in Danish only): Er du blevet gift eller skilt i udlandet? Har du skiftet navn i udlandet? (cpr.dk)
Issuance of passport in new name:
Danish passports are issued in the name that is registered in the Danish Civil Registration System (CPR). Please see the following link for guidance on how to apply for a new passport at the Embassy: How to apply for a Danish passport
If you are not registered in the Danish CPR system because you have never lived in Denmark, you need to provide evidence that you have changed your name in the UK.