When you submit the online form you get a confirmation message on screen so you know that it has been submitted.
If you do not see the message, there are probably errors on the form which have prevented it from being submitted. Have a look at the form again and you should be able to see notes as to what these errors are and how to fix them. We also send an email confirmation a few days later; if you don’t receive this email please get in touch with us to check we have received your application.