Med det udklip, så er det jo nok denne BBC serie fra 1984, det drejer sig om:

SOE
A documentary series detailing the exploits of the British Special Operations Executive, the legendary espionage and sabotage agency that operated during World War II.

https://m.imdb.com/title/tt14102168/

8 episoder, herunder episode 3, som første gang blev vist på BBC den 18. september 1984:

Subversion
In Nazi-occupied Denmark, life goes on almost as normal, becoming known as 'The Whipped-Cream Front'. But the Germans eventually show their true colours - and Danish SOE agents strike back hard.

https://m.imdb.com/title/tt14102168/episodes?ref_=tt_eps_sm

Det ser desværre ikke ud til at Internettet / YouTube er leveringsdygtig i et klip fra episode 3.