Solène's office features a poster of pioneering abstract Swedish artist Hilma af Klint, whose paintings are among the first abstract works known in Western art history.
Much of the artwork featured in the film were pieces done by real artists. Anne Hathaway and production designer Amy Williams worked together on sourcing art with Williams stating, "We worked really hard to make the art a focal point and make it authentic."
Anne Hathaway and Nicholas Galitzine are both big Arsenal fans, who play football in the English premier league. During an interview promoting this film, Nicholas checked his phone telling Anne that Arsenal had just scored a goal, Anne asked who had scored and was told that Trossard had scored and Anne said that she loved him. A few days later Leonardo Trossard recorded a video for Anne and Nicholas saying how pleased he was that they were fans.
(at around 1h 30 mins) One of the news articles shown on an iPhone screen titled "Hayes and Solene Will It Last" is supposedly from the site Horse & Hound. Horse & Hound is a real equestrian publication that Hugh Grant's character claims he is working for when he is mistaken for a reporter in the movie Notting Hill (1999). The movie The Idea of You has been compared to Notting Hill in various sources.
The watch Hayes wears is a TAG Heuer, Carrera Date, 39mm, brushed silver.