I'm in a similar position (although older than you judging from your image) I am a C&G 236 (parts I and II) qualified electrician and have never completed an apprenticeship. I never got into this line of work until I was 24 (by which time apprenticeships were pretty much non-existent) I've spent most of my time as a sparks working on commercial/industrial installations. I spent 5yrs at university studying computer science and then spent 5 years in IT and now I can't even bring myself to write a single line of code. I am now teaching myself to make furniture and carve wood. I don't have a mortgage and I have a 9m x 5m workshop at the bottom of my garden and I spend most waking hours in there 'doing stuff' (that's what I tell my wife) and I just love it. It seems to me that the only options to upskill in the furniture making arena is to sign up for a course with the well established furniture makers i.e David Savage, Marc Fish, David Charlesworth, Peter Sefton et-al - they all run various courses over different durations. They are however, expensive (around £18k for a year plus accommodation and travel). It's not an apprenticeship per-se, but you do get a certificate. These people are highly thought of in their field and I think having studied under their tutelage carries a lot of weight when applying for positions within the industry.
I, like you am not interested in domestic/construction carpentry and would dearly love to join an organisation, but I'm 60 next year and I think my ship has sailed ( I would swap it all for a career making furniture in a heartbeat). So I'll just keep teaching myself, watching loads of Youtube stuff and ask questions - you never know - there might be some lunatic out there who needs an older worker still willing to work hard and learn new skills.
Good Luck with your quest
Dno (
www.andonart.com)