Leeds Council's Digital Archive Riddled With Duplicate Images: The Numbers Telling an Uncomfortable Story

Leeds City Council's digital planning portal is carrying an estimated 14,000 duplicate image files across its public-facing document management system, according to internal figures reviewed by The Daily Leeds this week. The redundant files are slowing down access to planning applications for residents, developers and community groups across the city, and the backlog of unresolved duplicates stretches back to at least 2019.

The problem has sharpened in significance now because the council's Planning and Development department is midway through a £2.1 million digital transformation programme, contracted to run through to March 2027. Clearing duplicate imagery is listed as a precondition for migrating legacy records onto the new unified platform. Without that step completed, the migration cannot proceed on schedule — and delay costs are estimated at roughly £8,500 per week in extended contractor fees.

Where the Numbers Come From

The 14,000 figure comes from a technical assessment commissioned by Leeds City Council's Digital Services directorate and completed in April 2026. That review found that duplicate images account for roughly 23 percent of total file storage in the public planning portal — a proportion considered unusually high by the assessors, who compared it against Liverpool City Council's portal, which logged a duplication rate of around 9 percent following a similar review in 2024.

The problem is concentrated in records tied to two high-activity areas of the city. Kirkgate Market's redevelopment files — which span planning applications submitted between 2017 and 2024 — contain more than 1,200 duplicate photographs of the Grade I-listed Victorian building. The South Bank regeneration zone, stretching from Granary Wharf through to Holbeck, accounts for another 3,400 duplicated site images, largely because multiple contractors uploaded identical survey photographs without a centralised naming or deduplication protocol in place.

Leeds Civic Trust, which monitors heritage and development records for research and advocacy purposes, has noted publicly that searching planning records for properties around Aire Street and Sovereign Street has become noticeably slower over the past 18 months. The trust has corresponded with the council's Planning Services team on the issue, though no formal response has been published on the council's website to date.

What Deduplication Actually Costs — and What Delays It

Automated deduplication software licences for a database of this scale typically run between £12,000 and £40,000 for a one-year deployment, based on published pricing from UK public-sector procurement frameworks including the Crown Commercial Service's G-Cloud catalogue. Manual review — required where automated tools cannot confidently match images with differing metadata — adds staff time on top of that. The April 2026 assessment estimated 340 hours of officer time would be needed to resolve ambiguous matches flagged by the automated tools.

Leeds City Council's Digital Services directorate has budgeted £67,000 for the full deduplication and image-replacement phase within the wider transformation programme. That allocation was agreed at the council's Executive Board meeting in January 2026 as part of the approved transformation programme budget. Whether that sum covers the extended contractor costs if the work slips beyond October 2026 — the current internal target — is a question the council has not yet addressed in any published documents.

For residents and organisations regularly using planning records — architecture firms based at Munro House on Duke Street, housing associations operating across Chapeltown and Harehills, or community groups scrutinising applications in the Meanwood valley — the practical effect is pages that load slowly, searches that return confusing duplicate results, and documents that are harder to cross-reference. The council's planning portal logged 2.3 million page views in the 12 months to March 2026, according to figures published in its annual digital performance report.

The October 2026 internal deadline gives the Digital Services team roughly 14 weeks from now. If the deduplication work clears on schedule, the full platform migration is set to go live in January 2027. If it does not, the council's own assessment says the new portal launch slips to no earlier than the spring — pushing residents and planners back onto an ageing system for another planning season in one of the UK's fastest-growing cities.