No, you will be required to complete the whole registration process before your profile is saved.

If you feel that you may not have time to finish it all before exiting, please copy and paste your responses to the questions into a Word document or similar, so that you have a record when you come back to it another time.

Please note that if you leave a page of the registration process open for longer than 30 minutes without editing it, your session will expire and you will lose any information entered.