"Newman (HM Inspector of Taxes) v Hatt", LT 13 November 2001, discusses the valuation of a 50% share of a house. The respondent, Hatt (H) and his wife jointly owned a house which was sold for £90 000: H demanded a valuation of £42 000-£45 000, using auction sale prices and property advertisements, but the valuation officer gave it as £29 250, relying on transactions derived from information provided by the owners to the Inland Revenue stamp duty office. Only consent to view 3 transactions was given by H and the valuation officer only had general details of 14 others. He reached his valuation by deducting 25% from vacant possession price to make a tenanted value of £56 250, added £8 500 for any development and then deducted 10% from half of that figure to arrive at his valuation. The inspector (N) asked for guidance upon the application of the Finance Act 1989 s182(6)(d) to the disclosure of evidence held by the stamp duty office. Held. The market value of H's share in March 1982 was £29 250.