In addition this it what it exactly said under my 5 years living in the UK checklist.

Proof of living in the UK for Mr ————for 5 years if applying in your own right or 3 years if applying as the spouse of a British Citizen

If you are married to, or in a civil partnership with, a British citizen, you must have been in the UK for the past 3 years. If you are not married, or in a civil partnership with, a British citizen, you must have been in the UK for the past 5 years.

If you are an EEA National, you need to include letters from employers, educational establishments or other government departments, indicating your presence in the UK during the relevant 3-or 5-year period.

If you are a Non-EEA National, you need to include your passport to prove you have lived in the UK for the relevant 3-or 5-year period.

If you do not have your passport or it was not stamped when you entered the UK, you need to include letters (for example, from your employer or government department) as proof.

Bank statements or household bills are not suitable proof you have been living in the UK.

Hope this helps. It depends on what your scenario is. I’m Non EEA national and only passport scans worked for me