There is a scene where the group was running through a shipping port filled with white cars parked which were all 2022-2023 Hyundai Tuscon, not cars from the 90s since the story told is about 25 years ago.
In some scenes when Hardy and the others were in England to meet one of their friend's house, there are street signs which are not found or used in the United Kingdom. These signs are mostly used in other European countries like Hungary for example.
The train in which Hardy arrives for first time has modern LHB coaches, which were first introduced in 2000, while the movie year is before 1980s.
In the London scenes, the police cars are scene with both red and blue emergency lighting. In reality police cars in the United Kingdom predominantly use solely blue lighting.
Police cars shown in the London scenes are Ford Sierra Mk1 which were not available after 1987 yet the cars in the movie have 1993 number plates.
Since "Qatar Airways" was one of the sponsors of the film, there are scenes of their Airbus A350 being used throughout. But when the story from 25 years ago was being told, the same Airbus A350 was used in the narrative. Even though that type of plane wasn't built during that period, only after 2011.
SRK Train entry scene, the year is shown as 1995. The train shown consists of EMD Loco and LHB coaches, they were introduced in Indian railways after the Year 2001.