Yes. Mine is 5 years old, so not sure what happens on the books in a couple of years when it has officially been devalued to zero, i'm sure my accountant will tell me!
Probably. but I am too lazy to sort out things like that, and it gets too close to tax avoidance, which I try and stay away from. I don't even claim any household bills despite working from home for the last 5 years...
Yes. Mine is 5 years old, so not sure what happens on the books in a couple of years when it has officially been devalued to zero, i'm sure my accountant will tell me!