Pay slips and bank statements are the only things that can be no older than 28 days old at the day of application so you're fine. Everything else should be current but there is no firm requirement that they fall with in a specific age range.
I don't think you need a letter from your landlord confirming you live together at all. Isn't the lease in both your names? You also have utility bills which you don't need for proof of address but to prove that you've been living together.
Everything must be dated before your actual application date.
I don't think you need a letter from your landlord confirming you live together at all. Isn't the lease in both your names? You also have utility bills which you don't need for proof of address but to prove that you've been living together.
Everything must be dated before your actual application date.