Factual error: When Bourne is traveling to London on the Eurostar from Paris, immediately after the 'flashback' where Marie floats away after being killed, there are two helicopter shots of the Eurostar traveling to London. The second (far away) shot shows the train passing over a motorway. The train is actually traveling towards Paris, and therefore away from London. The motorway is the M20 and the bridge is approximately 3 miles west of junction 9 for Ashford (Kent). The train would have been 10 minutes away from entering the Channel Tunnel. (00:13:45)
Factual error: When Jason is in the Internet Cafe in London he Googles for Sewell and Marbury, when he gets the results he doesn't have "The "AND" operator is unnecessary - we include all search terms by default. [details]" which should have been displayed just below the search box. (00:28:55)
Factual error: When Jason is at the internet cafe googling the financial company, the address that comes up for Sydney is not technically possible. The street name (Market Street) is real, but the street number was 18017 which is not possible as the street is only a few blocks long and ends at about 400. (00:29:00)
Factual error: When Bourne googles Sewell and Marbury, the Sydney address that shows up has a lot of errors. The street number would not exist (too many digits), and the postcode is wrong (also too many digits). The phone number area code is also incorrect and does not include the country code (+61). (00:29:01 - 00:30:00)
Factual error: After the shooting in Waterloo Station police officers run to the scene blowing their whistles. British police officers haven't used or been issued whistles for many years.
Factual error: When the first assassin drives to Waterloo station to take out Simon Ross and Bourne, he is driving a BMW 3 series with a 2006 UK licence plate. However the events in this film are meant to follow on six weeks after the previous film, which make it still set in 2004.
Suggested correction: Nowhere in either of the first 3 Bourne films indicate the year they are taking place.
Technically, there is a timeline. You may have to watch the films again, and read up on when production for each film began and wrapped. The Bourne Identity was filmed between October 2000, and Spring/Summer 2001 (Greece scenes). Supremacy (With the exception of the New York ending which was filmed two weeks prior to the release) was filmed between October 2003, and March 2004 Ultimatum was filmed between October 2006 and March 2007 (which explains the snow seen in New York) Identity takes place in the winter of 2000, while Supremacy is set two years later, with Ultimatum taking place six weeks after he escaped Moscow. Legacy takes place around the same time as Ultimatum, and the last Bourne film (Jason Bourne) is set ten years after the events of the Supremacy/Ultimatum timeline.
The year of filming can't be used as indication of when films are set.
Factual error: The double decker bus in the Waterloo (York Road) scene has the number 43 on it. Paul Greengrass told the driver to put any number up on the front destination blind. The 43 does not go to Waterloo Station, but goes to London Bridge Station.