I was a cabinet maker for 15 years and looking to start my own furniture workshop.
From a fellow time served cabinetmaker, unless you have a very good top end clientele established in the UK you will starve. I moved back to the UK, lost my client base and quickly discovered I needed to be in "engineering" to earn a living. Moving into a niche market such as you have is a very smart and fortuitous move. All your hand skills are transferable. CNC is the way forward (says he who resisted it for a long while!).
I wish you well.