Earlier quoted context omitted.
It mostly depends if you intend to make significant pension contributions. Let's say your company has £100K to play with and you want it all. - You can pay yourself a £100K salary, of which take home pay will be about ~£67K - You can pay yourself a £8,840 salary tax free in order to qualify for the state pension but minimize national insurance, and pay 19% corporation tax on the remaining £91,160, which leaves £73,83…
I am surprised such loopholes still exist in UK. In Australia if you setup a company and 80% of the company's income is only from your own personal services from a single client then your company has to pay tax on personal income tax rates. These sort of loopholes were closed many moons back.
I'm self employed and get the bulk of my income through dividends. As with the example above, I often end up paying roughly the same amount of tax as someone with the equivalent salary would.
The big advantage for me is that I can have a very good year and a very bad year and pay an appropriate (smoothed out) level of income tax across both - which seems fair to me.