Funny you should mention the NINO … one of my favourite current topics.
I am becoming a real bore on this, but the situation is as follows:
– the NINO thing is about the process of making a claim: all benefit claimants must provide a NINO for themselves and anyone else in respect of whom they are claiming
– once you get over that hurdle, entitlement is calculated as normal.
– as far as partners subject to immigration control go, the normal calculation of entitlement has a reeduced applicable amount in IS, JSA(ib) and to a lesser extent Pension Credit; it does not have such a mechanism in HB, CTB or, in most cases, Tax Credits. So HB/CTB is calculated normally for the couple irrespective of the parter’s immigration status.
Returning to the NINO issue, in a case of this type the claim would have been refused before June 2005 because the claimant had failed to provide a NINO for his partner (unless she applied for one and provided enough evidence of ID etc.)
But in June 2005, decision CH/3801/2004 relaxed the NINO requirement for partners from overseas with no recourse to public funds. However, the DWP has been given leave to appeal to the Court of Appeal. Some Councils are using their power to “stay” decisions on such cases pending the appeal; others are following the Commissioner’s decision and awarding HB/CTB even though the partner has no NINO.