hmm my wife needed a NI number so i could claim Tax Credits, i dont think the job centre can help, i phoned the job centre + ones they didnt help either, we had to wait for the tax creds people to arrange with the NI people a interview, i went with my wife, yes you need your passport, proof of where u live ,etc, and once my wife got the number, she also started looking for a job, 6 months later shes working in the NHS, i think most settlement visas say the dreaded "no recourse to public funds", if it doesnt say you cannot work, then you can, but ive spoke to NI people they told me infact in some cases you dont need a NI num to look for work or work ,,, but trying telling the tax creds people that !!!... they wouldnt process the claim til they had the number..