You made a clerical error in your application.
Background first. The current UK application is a page-by-page questionnaire where the answers to some questions induce the programme to ask more detailed questions. At the point when the user selects PayPal or one of the credit cards for payment, the programme raises a pop-up asking "Are you sure about everything in your application?"
If the user is sure and proceeds to make payment instructions, the application is frozen. The user then prints out the application and proceeds to the biometrics centre. BUT... When people discover a mistake after the application is printed, they flip out.
If the mistake is simple and involves something mechanical (like address or postcode), The user can make a neat pen-and-ink correction on the form itself.
If the mistake is complex, like clicking 'no' to a prior conviction, the user must abandon the application and start over from square one. This includes forfeiting the fee.
End of background. Your question...
AM i able to make changes on printed copy?
Yes, given that the alteration is a simple and mechanical data item. Make a single line through the inaccurate item and hand write the correct information. Pedants will insist that you enter your initials in the margin. You can do that if you want, but I don't think it's necessary.
Ill be submitting my drivers licence copy as proof of address. So
would this matter?
There is no explicit (or implicit) need to confirm your address. If you want to do that you should give an explanation of why you think it's important. Giving them irrelevant evidence will take longer to analyse and the assistants will wonder what they are supposed to do with it.
They would prefer a recent utility bill (or some similar type of invoice) in your name. Several of these would be 'golden'. A driver's permit will do, but it is not 'golden quality'. Driving permits last for a long time and so the information may not be current. So if you really feel the need to confirm your address, the best option is to elevate the quality of your evidence. In general, the address is not something people lie about and as mentioned above it is not a requirement.