The Reading & Listening and Writing tests are both auto marked.
Once completed the Reading & Listening test are available immediately.
Once completed Writing test results will be available within 12 hours.
For more information on the Writing auto marker please see the following video here.
The Speaking test is marked by an examiner.
The results for Speaking tests are typically available 2 working days after the test for sessions with under 500 candidates, and 5 days for sessions with over 500 candidates.