Until the 18^th century, the Naduvazhi Swaroopams continued without much change. By the second half of the 18^th century is Sultans of Mysore, Hyder Ali and Tipu Sultan led military campaigns which created frenzy among the Naduvahis of northern Kerala. Nediyiruppu, Kola and other smaller Swaroopams quickly came under the Mysore Sultans. Fearing the attack from Mysore Sultans many Naduvazhis and Desavazhis fled to Venado. The Perumpadappu Swaroopam of Kochi soon accepted the suzerainty of the Mysore Sultans. Only Travancore resisted the attacks.

It was during this period that Kerala was divided into three regions namely Travancore, Kochi, and Malabar. By the close of the 18 century, the East India Company defeated Tipu Sultan. As a result of this, the Malabar region which was under Tipu Sultan came completely under the British rule. With this, the independent rule of the Naduvazhis of Malabar came to an end. Travancore and Kochi continued to be princely states.