Your sale and purchase needs to say 5% deposit and not 10%; however if it does not, it's not a huge deal.
I really hope it is subject to finance and you haven't gone unconditional.
You need to talk to your solicitor and sort it out with him. The bank will automatically send the money to the solicitor's trust account (on settlement day); following which they can forward 10% of the purchase price to the real estate agents. You are not expected to run around with a bank cheque. All of this must happen before 4pm.
As long as you have 5% of the total property value (purchase price) and the bank knows this; they will proceed with the settlement. If you do not have the 5%; the loan cannot go through, and if it does... well.. it's not ideal. What is the LEP on your property like? 95% lending is risky!
All of my settlements take place before 12pm.
Either which ways, your solicitors should be sorting this out with each other and the real estate agent.