Hi Wenderlynn - have you asked proprietors of similar businesses in the UK who they use? It seems like you would need the same coverage as a therapist + additional coverage for work you do offsite as a designer/installer.
Subtropical desert (Köppen: BWh)
Elevation: 1090 ft Annual rainfall: 7"
Power corrupts. Absolute power xxxxxxxxxxxxxxxx is kinda neat.
Groundnuts, Chestnuts, Elderberry, Comfrey+ from Interwoven Nursery