On March 20, 1929, arrests against WPP, CPI and other labour leaders were made in several parts of India, in what became known as the Meerut Conspiracy Case. Most of the WPP leadership was now put behind bars. The trial proceedings were to last for four years, thus outliving the WPP. Tengdi, the WPP of Bombay president, died whilst the trial was still going on.S.S. Mirajkar stated in his defense that:”It has already been pointed out to the Court that the Workers’ and Peasants’ Party was a party inaugurated with a view to establish national independence through revolution.” Abdul Majid on his behalf stated that:”If there is any resemblance between the Communist Party and the Workers’ and Peasants’ Party is that the immediate programme of the former and the ultimate programme of the latter is one and the same … As both are revolutionary bodies it is necessary that their national revolutionary programme should resemble each other.”
The judgement in the case was ended with the following passage:
“As to the progress made in this conspiracy its main achievements have been the establishment of Workers and Peasant Parties in Bengal, Bombay and Punjab and the U.P., but perhaps of deeper gravity was the hold that the members of the Bombay Party acquired over the workers in the textile industry in Bombay as shown by the extent of the control which they exercised during the strike of 1928 and the success they were achieving in pushing forward a thoroughly revolutionary policy in the Girni Kamgar Union after the strike came to an end.”After the arrests of its main leaders, the WPP was dissolved.