I want to know the answer to the following question:
What role had Graham Dudman taken after serving as The Sun managing editor?
All the background I'm provided with is that "The Sun staffers arrested were crime editor Mike Sullivan, head of news Chris Pharo, former deputy editor Fergus Shanahan, and former managing editor Graham Dudman, who since became a columnist and media writer.". Is that enough to answer the question?
Answer: yes