Effect of subletting against the terms of tenancy.

Where the tenant sublets the building or any part or it in contravention of the ter ns of the tenancy, his tenancy shalt stand terminated with effect from the date of sub- loti!ing ancl both the tenant and the sub-tenant shall be liable to pay dam- ages joiritlv and separately to the Authority at .: rate equal to three times the rate of rent payable for the building immediately before the termination until delivery of possession of the building or rhe part thereof to the Authority.