Possible Clues:

• Tonic was off - I go up the wall
• Delay ringing new firm to install small panelling
• Tonic was designed and created by woodsman perhaps
• Wagons fronting small house with oak panelling
• Wooden panelling on lower wall of a room
• Fine quality oak in wagon attracting tax
• Panelling was put round stylish little dwelling
• Old oak carts by animal shelter
• Why, originally, a trendy northerner collected fine oak
• Wooden wall panelling