As others have said, a Limited company for working one day a fortnight might attract more admin/accountancy fees than income.
But, having your own company means you can do work (non-driving) whenever you want if you can find it.
My advice would be to make the company dormant, spend the next months cultivating contacts, knowledge of the trade and when you think it is worth it, make the leap of faith into becoming a director and all the responsibility this entails.
Oh, and don\t forget IR35 next year…
Cheers
Paul
(Director of a sleeping Welsh company 
)