http://www.legislation.gov.uk/ukpga/Vict/54-55/39/section/77Stamp Act 1891An Act to consolidate the Enactments granting and relating to the Stamp Duties upon Instruments and certain other enactments relating to Stamp Duties.texttext/xmlenStatute Law Database2020-10-05Expert Participation2020-07-22 Part II771A lease or tack, or agreement for a lease or tack, or with respect to any letting, is not to be charged with any duty in respect of any penal rent, or increased rent in the nature of a penal rent, thereby reserved or agreed to be reserved or made payable, or by reason of being made in consideration of the surrender or abandonment of any existing lease, tack, or agreement, or of relating to the same subject matter.2A lease made for any consideration in respect whereof it is chargeable with ad valorem duty, and in further consideration either of a covenant by the lessee to make, or of his having previously made, any substantial improvement of or addition to the property demised to him, or of any covenant relating to the matter of the lease, is not to be charged with any duty in respect of such further consideration.(3),(4) . . . 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S. 77(2) excluded by Revenue Act 1909 (c. 43), s. 8Ss. 76, 77(3)(4), 78 repealed by Finance Act 1963 (c. 25), Sch. 14 Pt. IVS. 77(5) repealed (27.7.1999 with effect as mentioned in Sch. 20 Pt. V(2) Notes 1, 2 of the amending Act) by 1999 c. 16, s. 139, Sch. 20 Pt. V(2) Notes 1, 2