If you don't think that this incarnation of Bulldog Drummond is very much like the many older ones (starring the likes of Ronald Colman, Ron Randall or John Howard, then you are right! Instead of being a man of adventure that gets sucked into solving crimes, Dick Johnson's version of Drummond is much more like a James Bond character--fighting and bedding very sexy ladies and trying to stop some big baddie who is bent on international wickedness instead of just murder or robbery. It's best just to forget about the earlier Drummonds and treat this one like an all-new character.
During the course of the film, various acts of sabotage are made on the SST-1 project (the 'SST' was an early name for what became the Concord project in the UK and France). In each case, a pretty woman is behind the attack. If this sounds a bit familiar, this is because it's much like the plot of Johnson's other Drummond flick, "Deadlier Than a Male". However, Drummond is not alone in investigating the sabotage- -a kooky and sexy lady assistant (similar to Britt Ekland in "The Man With the Golden Gun") is there as well. Also WHY and HOW these ladies work are a bit different from the previous film...as they are robotic in their actions and loyalty.
While this film is a decent spy-type film, it's less original than the last. Additionally, the film relies on two bad clichés ALSO found in the last film--the megalomaniac baddie who, instead of just killing Drummond, keeps him around supposedly to give him a chance to kill him AND all women (even robotic ones) find Drummond so sexy that they cannot control themselves. It's a shame, as the film is pretty good otherwise. All this plus the robotic aspect make this one far, far inferior than Johnson's prior effort.