Level 2

Other tax discussions

I moved to the UK in August of 2012 and am not sure if I filed that year or not, I did not file in 2013 but have been filing since then! I do not make enough to actually owe anything but I was wondering (incase I move back) if I need to file for those years? I basically earned nothing in 2012 and 2013 but know that might not matter. How do I go back and file? Do I need to? I've not taken a return in the past 5 years so not looking for one... Just want to make sure I've got no problems applying for jobs in the USA.