ILR question :-)

[Terpe]

You do not need to contact UKBA about that as there are no specified residence requirements for ILR application.
The ILR application form makes no mention or question about absences or restrictions on absences from UK, nor does it require any declaration concerning any absences from UK.

As rusty has mentioned there are restictions on absences from UK when your time comes to apply for British Citizenship.
These restrictions count back for 3 years if spouse or civil partner.

There is discretion to disregard absences in excess of these limits in certain cases.
Work related cases are usually included but these may not apply to spouses.

I would wait until you have secured your ILR before making enquiries at UKBA about future application for absence disregard.
Just my opinion