Doc required for cohabitation

[suchita02]

My husband (tier2 ICT) with two dependent (spouse and kid) going to apply for ILR next week.

We have got two council tax bill on joint name ( year 2014-15, 2013-14). They both dated 3 march 2014 because my name on bill recently added.
Year 2012-13 council bill has only my husband name .

We have got 3 council tax bill ( dec2009-March2010, April2010-March2011and march2011-April 2012) which has joint name but this is on our previous address.

July 2011 we moved to property which we are currently living.

Which council tax bill should I submit please can you suggest?

Other than council tax bill my husband got 10 letter on same address from 3 different source ( HMRC, electrol register, UKBA) dated between jan12 - feb14.

I have got 12 different letters on same address from 4 different source ( NHS, UKBA, electrol register, bank statements) dated between jan12 - feb14.
Do we need any thing else for cohabitation ?

[Apam]

Last 2 years proof is all that is required. Whatever bills or ketters addressed to both of you or individualy in the last 2 years is fine.