I will have payslips and p60 showing tax reductions, as I will be paying my taxes but only recieve my payments by cash. Will that work I will still be putting my earning into my bank account

Hello everyone, I have will be applying for a spouse visa hopefully by the end of the year. I have recently started working full time at a supermarket and will be earning £19,300 a year (gross income), however I will be recieving payments by cash in hand what would be the best advice for me to take ...