In this Part—

• “improvement” means F1, in relation to a dwelling house, any alteration in, or addition to, F2the dwelling-house and includes—

  1. a

     any addition to, or alteration in, landlord’s fixtures and fittings and any addition or alteration connected with the provision of services to F2the dwelling-house,

  2. b

     the erection of a wireless or television aerial, and

  3. c

     the carrying out of external decoration;

• F3and shall be similarly construed in relation to any other building or land;

• F4“improvement contribution” means an amount payable by a tenant of a flat in respect of improvements to the flat, the building in which it is situated or any other building or land, other than works carried out in discharge of any such obligations as are referred to in paragraph 16A(1) of Schedule 6 (obligations to repair, reinstate, etc.);

• “long tenancy” means—

  1. a

     a long tenancy within the meaning of part IV,

  2. b

     F5a tenancy falling within paragraph 1 of Schedule 1 to the M1Tenants’ Rights, Etc. (Scotland) Act 1980, or

  3. c

     a tenancy falling within paragraph 1 of Schedule 2 to the M2Housing (Northern Ireland) Order 1983;

  and “long lease” shall be construed accordingly;

• “total share”, in relation to the interest of a tenant under a shared ownership lease, means his initial share plus any additional share or shares in the dwelling-house acquired by him.