Second (2nd) Hand Assets / Liquidated Stock purchase

We have just purchased some plant and machinery from a company that are going in to Liquidation. Approx £18k worth of plant for a fraction of the price. My question is we will put the purchase on QF as normal but is there away to reflect its true value in the assets, we have documentation from the company stating its full value?

The value of the asset and therefore the amount of Capital Allowances that can be claimed is based on how much the item cost, including any costs directly related to the acquisition, but not interest or finance costs, and/or any installation costs.