Ask an Immigration Solicitor. Get an Answer ASAP.
Good evening, you will be able to apply British citizenship if in the last 5 years you have not been out of the U.K. more then 450 days and 90 days per year.
Yes that will affect your application if you are not paying your taxes in the U.K.
Thank you again for visiting JustAnswer, please let me know if you need me to clarify anything or if you have any additional questions. I am happy to help!