Ask an Immigration Solicitor. Get an Answer ASAP.
Good morning, if you were put in a non tax band then you would not have to pay tax for that month.
In regards ***** ***** if you have been outside the U.K. more than 90 days in last 12 months then there is an exception however would need to provide evidence you had to work outside the U.K. from employer.
You also must not have exceeded 450 days in last 5 years.
How many days were you outside the U.K.?
Then unfortunately in your circumstances you would not be able to apply until you return and stay in the U.K. there should not be break in 5 years.