NVQ level business 3/4 advice?

[hotsummersday]

I currently work as a band 3 secretary for the NHS. I have a NVQ level 2 in business admin. I feel stuck in a rut at the moment in my job and i'm really wanting to gain some more qualifications and progress into a better role. Does anyone know if you can do level 4 from a level 2 or do I have do level 3 and then 4? I'm happy to go to night classes at college to do this but can't seem to find any in my area or any links online for online courses I'm probably not looking in the right place. Could anyone please help? Thanks in advance