David Lammy, the Tottenham MP and former deputy prime minister, is preparing to run for London Mayor in 2028. The bid is contingent on whether Sir Sadiq Khan chooses to forgo a fourth term in office.

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The 2014 bid and the legacy of 'Calamity Lammy'

David Lammy is no stranger to the mayoral stage, having become the first Labour MP to formally announce a run for London Mayor back in 2014. During that campaign, the Tottenham MP positioned himself as a candidate for the entire city, offering critiques of both Ken Livingstone and Boris Johnson. However , his political trajectory has been marked by volatility, including a period as Justice Secretary where the Conservative Party dubbed him 'Calamity Lammy' following the accidental release of prisoners.

Despite those labels, David Lammy has maintained a focus on systemic inequality. In 2017, he chaired a significant review that highlighted stark racial disparities in the UK justice system. According to the report, black individuals accounted for 25 per cent of the prison population and over 40 per cent of young people in custody, despite making up only 14 per cent of the general population.

Zack Polanski's declining support and the Labour opening

The current political calculus for David Lammy relies heavily on the perceived weakness of the Green Party. According to Labour sources, Lammy believes that the "sinking fortunes" of Zack Polanski's Greens have effectively put the mayoralty "back in play" for Labour. this shift suggests a strategic opening for a candidate who can consolidate the left-wing vote without the baggage of the current administration's specific failures.

This internal Labour maneuvering comes at a time of transition for the party's leadership. The report says that David Lammy was ousted from the Cabinet when Andy Burnham entered No 10, suggesting that a mayoral run in 2028 could serve as a high-profile political resurrection for the former deputy prime minister.

Sir Sadiq Khan's 16-year legacy and the 20mph zone backlash

Sir Sadiq Khan has dominated London's political landscape since taking office in May 2016, securing re-election in 2021 and 2024. If he serves another full term, Sir Sadiq Khan will have led the city for 16 years. While supporters praise his decisive action on air pollution and the implementation of free school meals for low-income families, his tenure has not been without friction.

Critics of Sir Sadiq Khan point to a perceived obsession with restricting vehicle use, specifically citing the unpopularity of 20mph zones and various vehicle charges. Furthermore , the administration has faced sustained pressure over its inability to effectively curb knife crime and the perceived inefficiency of Transport for London's (TfL) finances during recent economic shocks.

Rent caps and borough-linked housing costs

To differentiate himself from the current administration, David Lammy has proposed a more interventionist approach to the city's housing crisis. He has called for affordable housing requirements to be directly linked to the average earnings within each specific borough, ensuring that "affordability" is defined by local economic reality rather than a city-wide average.

Beyond housing links, David Lammy's platform includes the introduction of a cap on private-sector rents to protect tenants from price gouging. He has also suggested the creation of higher council tax bands specifically for large properties, a move designed to shift the financial burden toward the city's wealthiest homeowners.

The timing of Sir Sadiq Khan's decision next year

The primary obstacle to David Lammy's ambitions remains the current mayor's own resolve. Sir Sadiq Khan stated recently that his "tank is full" and that he is still "fizzing with ideas," though he will not make a final decision on whether to stand for a fourth term until next year.

This leaves a critical gap in the narrative: it remains unclear if David Lammy has the backing of the broader Labour party machinery or if he is operating as a rogue agent. Additionally, the source does not clarify how David Lammy intends to reconcile his proposed rent caps with current national housing legislation, leaving the feasibility of his economic platform an open question.