Postman and Workday SOAP webservices authentication

Has anyone had luck using Postman to connect to Workday XML/SOAP webservices as it seems the Basic Auth in headers does not work nor does it seem to work adding the username and password string in to the XML body header.

I have copied and pasted a request direct from Workday Studio (where the request works using the same credentials). I then also tried SoapUI to test an external service for calling these requests and this also worked using the sem credentials showing it is not an issue with a 3rd party client on my laptop calling the requests.