583. Liability for costs in relation to a claim notice.

An RTM company1 is liable for reasonable costs incurred by a person who is:


    (1)     landlord2 under a lease3 of the whole or any part of any premises4;


    (2)     party to such a lease otherwise than as landlord or tenant5; or


    (3)     a manager appointed by a tribunal (or court) under Part II of the Landlord and Tenant Act 19876 to act in relation to the premises, or any premises containing or contained in the premises7,

in consequence of a claim notice8 given by the company in relation to the premises9. Any costs incurred by such a person in respect