As someone who frequented King's Cross a great deal for commuting, one things always struck me as odd: Platforms 9 through 11 do not have the large pillars shown in the movie that is used for access to 9¾.

Here's a picture of Platform 9:

![http://www.nationalrail.co.uk/SME/html/NRE_KGX/images/photos/800/o2248-0002210.jpg](https://i.stack.imgur.com/UYEop.jpg)

Did Rowling write the book having never seen the platforms themselves?