Citizen Advice are damn right Ron, yes, you are married for 4 yrs already, and you had business of your own you can get a visa for your wife with no problem at all hopefully, I had peek in another forum that the husband show huge amount of savings to the ECO when they submit wife application, but he dont have job, so the ECO questioned him, How you gonna support your wife if your savings finish up? He dont have job, so my idea of having visa is "your earning money to support your family" and not by the amount of savings you had, but it also help when you have savings

Good luck Ron