"What I have learned, is that there is an undeniable sense that politics just does not work the way it should," Sunak told the 2023 Conservative Party conference, held in Manchester from October 1-4.
"The feeling that Westminster is a broken system and the same [applies to the whole government]. It is not anger, it is an exhaustion with politics. In particular with politicians saying things and then nothing ever changing."
The UK political system has been prioritizing easy decisions over the right ones for the last 30 years, the prime minister said, adding that it was a period of "rhetorical ambitions" focused on short-term advantages.
"I know you want tax cuts. I want them too and we will deliver them. But the best tax cuts that we can give people right now is to halve inflation and ease the cost of living," Sunak added.
On Tuesday, UK Financial Minister Jeremy Hunt said tax cuts were unlikely to occur before the parliamentary elections expected before January 2025.