On 26/05/2013,
you requested for the version in force on 26/05/2013
incorporating all amendments published on or before 26/05/2013.
The closest version currently available is that of 20/05/1994.
Meaning of firm
4. Persons who have entered into partnership with one another are for the purposes of this Act called collectively a firm, and the name under which their business is carried on is called the firm-name.