(1) Where, for the purposes of stamp duty chargeable under or by reference to the heading "Conveyance or Transfer on sale" in Schedule 1 to the Stamp Act 1891, the consideration, or any part of the consideration, for—
(a) the transfer or vesting of any estate or interest in land, Or
(b) the grant of any lease or tack,
cannot, apart from this Resolution, be ascertained at the time the instrument in question is executed, the consideration for the transfer, vesting or grant shall for those purposes be taken to be the market value immediately before the instrument is executed of the estate or interest transferred or vested or, as the case may be, the lease or tack granted.
§ (2) Where, for the purposes of stamp duty chargeable under paragraph (3) of the heading "Lease or Tack" in Schedule 1 to that Act, the rent, or any part of the rent, payable under any lease or tack cannot, apart from this Resolution, be ascertained at the time it is executed, the rent shall for those purposes be taken to be the market rent at that time.
(3) For the purposes of this Resolution—
(a) the cases where consideration or rent cannot be ascertained at any time do not include cases where the consideration or rent could be ascertained on the assumption that any future event mentioned in the instrument in question were or were not to occur,
(b) the market rent of a lease or tack at any time is the rent which the lease or tack might reasonably be expected to fetch at that time in the open market, and
(c) the market value of property at any time is the price which that property might reasonably be expected to fetch on a sale at that time in the open market.
§ (4) This Resolution shall apply to instruments executed after 7 December 1993.