London Leads on Duplicate Image Replacement — But Paris and New York Are Closing the Gap

Transport for London confirmed this spring that its digital content management system had accumulated more than 340,000 duplicate image files across its customer-facing platforms — a problem that had quietly inflated storage costs and pushed inconsistent visuals onto signage screens from Stratford station to Heathrow Terminal 5. The organisation began a structured duplicate-image replacement programme in March 2026, contracting with a specialist digital asset management firm to audit and consolidate the backlog within 18 months.

The timing matters. Local authorities and major public bodies across the capital are midway through Sadiq Khan's Smart London Together framework, which sets out targets for reducing digital infrastructure waste and improving public-facing service coherence before the end of 2027. Duplicate digital assets — images, icons, graphics stored multiple times under different filenames — sit at the unglamorous end of that agenda, but the costs are real. Redundant storage, inconsistent branding, and slower content delivery all fall on the public purse.

How London Stacks Up Against Other Global Cities

The problem is not London's alone, but the city's institutional scale makes it unusually visible. New York City's Department of Citywide Administrative Services launched its own digital asset consolidation drive in late 2024, focusing initially on the city's 311 service portal, which serves roughly 8 million residents. Officials there publicly stated the exercise had identified duplicate imagery running into the hundreds of thousands of files. Paris, working through its Direction de la Communication under the Mairie de Paris, completed a similar audit by mid-2025 and reported a 41 percent reduction in redundant digital assets across arrondissement-level websites — a figure cited in a European digital governance review published by the Bertelsmann Stiftung in January 2026.

London's institutions are more fragmented than either city, which complicates the picture. The Greater London Authority, the 32 borough councils, NHS trusts, Transport for London, and the Met Police each maintain separate digital estates. Southwark Council began a standalone duplicate-image audit in January 2026, working with the Local Government Association's digital standards team based in Smith Square, Westminster. Tower Hamlets is understood to be at a scoping stage. No single coordinating body currently holds oversight of the full London-wide digital asset estate — a structural gap that the GLA's own Digital Infrastructure Review, published in February 2026, flagged as a priority for resolution.

The financial dimension concentrates minds. Cloud storage costs for UK public sector bodies have risen sharply since 2023, partly tracking broader infrastructure price increases. The Crown Commercial Service's G-Cloud framework, which governs how councils and NHS bodies procure cloud services, lists per-terabyte annual storage costs that have increased by roughly 18 percent between the 2023 and 2025 contract cycles. Across a large borough council, unchecked duplicate image accumulation can add tens of thousands of pounds annually in unnecessary storage spend — money that, in the current fiscal climate, borough leaders are under pressure to recover.

What Comes Next for London's Institutions

The Local Government Association is expected to publish updated digital asset management guidance by September 2026, drawing partly on the Southwark pilot. The guidance will likely recommend a standardised file-naming convention and a minimum annual audit cycle — approaches already embedded in Amsterdam's municipal digital governance policy, which the Dutch government codified in 2024 under its Digital Government Act.

For Londoners, the practical upshot will be largely invisible: cleaner, faster-loading council websites, more consistent imagery on TfL digital signs, and fewer instances of outdated photos appearing on borough planning portals. The Barbican Centre, which manages a substantial digital media archive spanning its arts programme dating to 1982, has already been working with the Jisc-funded digital preservation community to address duplicate asset proliferation in its collections management system.

The work is incremental and rarely headlines. But with the GLA's Digital Infrastructure Review setting a formal deadline of December 2027 for measurable progress across major public bodies, the window for voluntary compliance is shortening. Boroughs that wait risk being pulled into a mandated framework — one that is likely to come with less flexibility, and a tighter audit trail, than the programmes already under way.