I'll just share you my experience with that NMC thing.. I think it's much better if you will be the one to request for the Mandatory Pack1 from the NMC rather than to depend from any agency to have the Pack1 for you. Go directly to the NMC website, here is their direct link for those nurses trained outside Europe :pntrghi: REGISTRATION. On the bottom part there are helpful download files that would guide you through as well as the NMC Application Request form.
With regards to the Greenfields, Yes they also sent me what they have sent you. I called them and asked if i really need to sign at once the Agreement they gave me. The agent i spoke to told me that it's not really necessary to sign it at once, what's important is that you fill up the other documents they sent you and return it to them ASAP so they could line you up for interview.
Lastly, i believe that these two agencies are still waiting for an employer in the UK that would hire nurses that are not on the Shortage Occupation List. Keep your spirits up, it's better to have something to hope for than to have nothing at all.:)