In 1990 BEA(Birmingham Executive Airways/Birmingham European Airways) flew a similar route using BAC 1-11 BHX-GOT-OSL-BHX.
Sadly that was another example of bad advertising by BA and indeed the Danes who were running BEA at the time. You were lucky to get 30 economy passengers. Very little business traffic on that route. It was shelved about 12 months after it started. The 1-11 400 was a thirsty beast as well, so the economics just weren't there.