Parliament Square in London is slated to become the next major landmark to be pedestrianized, with proposals set to enter public consultation early next year. The move follows decades of debate and comes after a partial pedestrianization of Oxford Street.

The estimated £80 million 'Parliament Square Streetscape' project aims to enhance security and public space, with the new arrangements projected to be fully operational by 2031. Security has been a significant consideration, particularly after the 2017 Westminster terror attack. While buses will be barred from the square, limited access for taxis and school coaches on visits will be maintained.

However, concerns have been voiced by parliamentarians regarding the potential impact on pedestrian safety, specifically citing the risk posed by fast-moving cyclists. "Cycle management" measures are reportedly being developed to address these worries. The idea of pedestrianizing Parliament Square has been a long-standing one, with initial plans dating back decades and designs previously developed by architect Norman Foster.

Mayor of London, Lord Khan, who pledged to pursue pedestrianization upon his election in 2016, has described the Oxford Street closure as a "massive moment" for the capital. The project faced delays, partly due to Transport for London's financial constraints. Negotiations are ongoing between Parliament, TfL, and Westminster City Council regarding the cost-sharing of the £80 million budget.

Concept designs for the square's potential future appearance were published by the business group London Heritage Quarter in 2023, though the final scheme may differ. The timeline for the project's completion could also fuel speculation about Mayor Khan's intentions regarding a potential second term.