You can legally work in th UK in Spouce visa.
If your a Nurse in the Philippines,current regulations must be registered in the NMC.You will be assessed as an overseas nurse,whereby you need a IETLS score of 7 and undergo ONP,that is done by the local universities or privated provider.The NHS is undergoing organizational change where local and overseas nurses were displaced due to Budget Deficits,there are slim chances in getting a job nowadays.
Since you are here,try to gain experiences as a Carer in the Nursing home and when you gain registration maybe you can try to submit an application in the NHS portal,if your lucky to be selected for interview..good and if not try again.But take my advised,its hard to seek employment in teh NHS as a self starter,take my work been here as RGN in the NHS for 8 years.