Possibly. And if so he would be hiring an accountant too. But he would surely face the same obstacle of thinking in terms of irregular income?
However, many dayraters pay PAYE and classed as employed.
In my case I was both a dayrater and a basic income earner. As I said, approximately 50% of my salary was in bonuses. My income was not fixed. It all depended on the number of days I worked offshore in a year and the only time I knew that was at the end of the year.
I always faced this problem when going for a mortgage. Often, the representative of the building society had no familiarity with my kind of earnings structure and how it worked and they would immediately give me an adverse reaction to the said bonuses. I had to convince them otherwise as they wouldn't have given me the amount of mortgage I was after otherwise. Eventually they would see sense.
I always paid PAYE and was classed as employed.
I know many people that earn £200 a day and more in bonuses and pay PAYE. If they work 180 days of the year then that is £36000 per annum. What if their basic salary is £18000 per year and wanted to bring a spouse into the UK from the Philippines? They would be reliant on the bonuses clause in the regulations.