This method of remunerating yourself will work for some and not for others. It's simply not possible in my industry to structure your affairs in this way. Likewise as others have said, there can be an immediate tax advantage, but that advantage doesn't recognise the other benefits that might accrue as the result of employment.
I would pay a whole lot less tax if was able to go this route, but hen I would not be provided with: private medical, private dental, health cash plan, family life insurance, diability/illness cover, ipad, iphone, double-matching of pension contributions (i.e. I pay in 10% of my base taxable salary (thereby not poaying any tax on that portion anyway) and they top-up with a further 20%, as well as various other perks.
Its all relative and depending on the industry and your personal situation, there may be no real advantage at all to looking at using a limited company structure.
An accountant is the person to go see and get some advice. Even if it costs you a couple of hundred pounds for some proper professional advice, it is worth knowing with accuracy whether it will be worth your while etc.