In the Tower of London, the red suitcase rests on crates labeled "Art Kunst". This are the same crates that contained gold in Olsenbanden og Dynamitt-Harry på sporet (1977).
Final Olsenbanden-movie featuring Anne-Lise Tangstad; she passed away 3 months after this movie was released.
Kjell's absence during the London scenes and the heist at the film's end was because of Carsten Byhring's commitment to the theatre, as shooting started a month before he was free to do the movie.
When Egon and Benny enter the Tower of London, Akershus festning (Akershus fortress) in Oslo was used as a stand-in. The door Egon and Benny access would turn up again in Olsenbanden jr. Mestertyvens skatt (2010).
This is the first time Valborg's sister makes an appearance, who she has mentioned on several occasions.