u/BurpBuddy

So my wife is a sr. Product manager at a very big well known organization and we recently our own business/service (unrelated to her job) i wanna know what title she should have or should show in linkedin n elsewhere? Is cpo too big of a jump from sr. Product manager but she is managing the whole product in our business as its just us two. Or should she be vp of product which looks more subtle and realistic after sr. Product manager. Also not sure if cpo term will get her less job offers in future since they might think she is overqualified for alot product manager related roles. (I have no product background sorry if this sound dumb) thanks for the suggestions.

So I want to work as a private chef and make my own website later on as 3rd party platform charge 25 to 30% out of profit, so thinking to register as a sole trader or ltd. But my wife is already working on her tech platform (edtech) completely different field but since its an online platform she will launch soon she needs to register an ltd company. My question is can we both register (soler trader - me & ltd company - my wife) under the same home address? Will there be tax related issue from hmrc as in merging both businesses for income tax since its the same address? But they are totally separate business run by two separate people its just that we are married and share same address.
Any thoughts would be appreciated. Thankyou