In SpecFlow the AfterTestRun calls are not triggering. We are correctly Binding the class at the top. After a google we found that this issue occured with an older version of NUnit and there was a bug fix.
However we are now using the latest version of NUnit 2.6.4 and the latest versions of SpecFlow 1.9.0 and SpecFlow NUnit 1.1.1
Found the issue to be older versions of NUnit core running, updated these now and it all triggers.