The political grip of Mamata Banerjee, West Bengal’s chief minister and India’s most electorally successful female politician, is showing cracks. Internal dissent within her Trinamool Congress (TMC) has escalated into a public feud, with senior party figures accusing her of authoritarian decision-making. This instability comes at a critical juncture as the United Kingdom seeks to deepen trade ties with New Delhi, a process that requires predictable state-level partnerships.
Banerjee, who led the TMC to a third consecutive term in 2021, has long been a formidable force in Indian politics. Her party governs West Bengal, a state of 100 million people and a key economic hub for sectors such as tea, textiles and information technology. However, recent defections by prominent leaders, including a former minister, signal growing disillusionment. Critics point to her centralised control over candidate selection and policy decisions, which has alienated regional factions. The party’s internal democracy has been hollowed out, they argue, creating a vacuum that opposition parties may exploit.
The timing is awkward for the UK, which is negotiating a free trade agreement with India. British officials have emphasised the importance of state-level engagement, particularly in West Bengal, where UK-based firms have investments in renewable energy and education. A weakened chief minister could delay approvals and complicate ground-level implementation. Downing Street has so far remained publicly neutral, but diplomatic sources indicate concern over the stability of one of India’s most industrialised states.
Banerjee herself dismisses the rebellion as a minor tremor. In a recent press conference, she said: “The party is united. Those leaving were never truly with us.” Yet the numbers suggest otherwise. Five sitting legislators have crossed the floor in the past month, and more are rumoured to be in contact with the opposition Bharatiya Janata Party. The BJP sees an opportunity to expand its footprint in a state it has long coveted but failed to capture.
The broader geopolitical calculus is delicate. UK Prime Minister Rishi Sunak has made the Indian trade deal a flagship of his foreign policy. It is meant to boost post-Brexit commerce, with Britain’s services sector eyeing India’s digital economy. But trade agreements require regulatory alignment at multiple tiers of government. West Bengal’s infrastructure projects, including a planned deep-sea port, are contingent on state cooperation. If Banerjee’s authority wanes, these projects could stall, undermining the deal’s potential value.
Some analysts argue that the UK should diversify its engagement with other Indian states, such as Gujarat or Tamil Nadu, which have more stable administrations. But West Bengal’s strategic location, bordering Bangladesh and serving as a gateway to Southeast Asia, makes it indispensable. British diplomats are now watching closely for signs of a power struggle within the TMC, aware that any shift in leadership could reset relations.
For Banerjee, the immediate priority is consolidating her party ahead of the 2026 state elections. She has launched a series of welfare schemes and public works to shore up support. But the internal discord suggests a deeper malaise. If she fails to arrest the decline, India’s most successful female politician may find her legacy in jeopardy, with repercussions far beyond Kolkata.
