No. You can only include people who currently live with you in your application. Your landlord needs to approve and verify your application before you can be considered for a property. They will not be able to do so if there are extra people that they have no information about. 

You should also be aware that if you move, you must leave your current home in vacant possession. This means that no one can remain living there after you have moved out, unless if  moving due to overcrowding.