If you are on a spouse visa, after you have been here 2 years, you can apply for ILR.
In preparation for this you should start getting you name on letters, such as, council tax bill and utility bills.
For NI number, go to your local jobcentre plus or call 0845 600 0643
http://www.direct.gov.uk/en/MoneyTax...ance/DG_190057
