Self Assessment submitted online, pay now or wait for response from HMRC?

As the title says, I completed my self assessment tax return online a couple of days ago and have a submission receipt reference number to show this. I can also click on the "View your Calculation" link and see what I need to pay before the 31st Jan. Question is, do I just go ahead and pay this now through "Make a Payment" and entering the calculated amount, or do I wait for some kind of approval from HMRC for my self assessment? First time doing this, thanks.

Hi
You should use the amount online as you will not receive any correspondence confirming the amount due.
Thankyou.
Regards.