ILR application for husband & wife both on Tier 1 visa

[messina]

Hello,

Myself and my husband are both on Tier 1 visas and coming up to 5 yrs in the UK. We would both like to apply for ILR.

Do we need to apply separately for ILR, as we entered the UK originally on separate visas? (Got married after moving to UK)

Or can one of us be the main applicant, and the other apply as a dependent (and hence save some money on the fees)?

Thanks