974. Meaning of 'long tenancy'.

'Long tenancy' means1 a tenancy2 granted for a term of years certain exceeding 21 years, whether or not subsequently extended by act of the parties or by any enactment3.

Where, on the coming to an end of a tenancy at a low rent4, the person who was tenant under that tenancy immediately before its coming to an end becomes, whether by grant or by implication of law, tenant of the whole or any part of the property comprised therein under another tenancy at a low rent, then, if the first tenancy was a long tenancy or is deemed