How did they know the Swedish accents were authentic?
Because they sounded like the chef in the muppets or because they sounded like the plumber in the movie they watched in the 70s?
I think the Swedish academy of science might need to look at a more secure authentication program.
Although First Direct having it's call centre in Leeds was a good test. Unless nigerian scammers have learn't t'tak proper like wot ar do sithee.