I am furnishing a buy to let at the moment and have found a table and chairs online through the buy&sell. I know normally you keep receipts and claim tax relief over 8 years.
My question is what happens when buying from a private seller second hand?
I would keep a copy of the relevant ad(s) as evidence. I might also retain photos of any texts or any email correspondence with the seller. Based on my experience, Revenue would be fine with such an approach.