Utility bills, lease agreements, mortgage statements, or official government correspondence with your name and address can be used to prove residency.
From 6 April 2013 determination of an individual’s residence status is purely a statutory determination under the SRT contained in FA 2013 Schs 45/46.
Your list includes mortgage statements; however, this does not prove the individual with the mortgage lives in the property. It could be a mortgage a buy to let.
What precisely are you seeking to do?
Malcolm Finney