I'm so sorry to hear this. If it's any consolation there seems to be a shockwave running through the furniture and custom joinery businesses right now, so unfortunately you're certainly not alone.
I heard last week that Cimitree has just gone bankrupt. They were a business that I had a lot of respect for, one that seemed to have a sensible strategy and was navigating around most of the usual pitfalls.
https://vimeo.com/127909685
The message I'm hearing is that Brexit nervousness is making clients reluctant to finally commit to projects, and lots of businesses I know are really struggling as a consequence. I hope you come through this horrible experience stronger and wiser.