There’s a bottle of Guerlain Mitsouko on Ellen Love’s dressing table – a contemporary bottle which was given the vintage touch of an atomizer pump. Choosing this perfume may not be historically accurate – it was created in 1919, ten years after the time in which this episode takes place – but it totally suits Ellen’s vampy and flamboyant style.

When Mr Selfridge asks his mistress to be the testimonial for the first Selfridges perfume, her mind immediately goes to one of her personal heroines – Emma Calvé, the most famous French opera singer of the Belle Époque. Ellen certainly loves the opera singer for being talented and successful, but is also fascinated by her lifestyle, which includes using Guerlain perfumes. Who knows? Maybe Ellen wears a Guerlain perfume herself to emulate her idol.