Your completion certificate is available to download from your course specific page.  The centre need to complete their post-course returns before it will be available to you. You will need to have passed the course and have completed the post course feedback questionnaire. 

If your certificate is still not available, it is also worth checking that all of your pre-course work is complete, as this also locks the certificate.  Completion ticks for all e-modules and assessments and a score of at least 80% in MCQs.