Coventry's Duplicate Image Crisis: What Happens Next and the Key Decisions Ahead

Coventry City Council's digital records system is sitting on a problem that has been quietly growing for years. Duplicate images — redundant photographs of properties, planning applications, and heritage assets stored multiple times across the council's document management infrastructure — now account for a significant share of its digital storage overhead, according to information presented to the council's scrutiny committee earlier this year. The question now is not whether to act, but which path to take — and who pays for it.

The issue cuts to the heart of how local authorities manage public data. With the UK government's broader push toward digitising planning under the Levelling-Up and Regeneration Act 2023, councils like Coventry are under pressure to clean up legacy data before migrating to new national platforms. Carrying duplicated material into a new system doesn't just inflate costs — it undermines the reliability of records that planners, developers, and residents depend on daily.

What's at Stake Locally

Coventry's Planning and Development directorate holds image records stretching back to the early 2000s, covering everything from listed building applications in the Cathedral Quarter to housing developments along the Foleshill Road corridor. The council's document management platform, shared with several of its back-office functions, stores images tied to more than 40,000 active and archived planning cases.

Two specific programmes are directly affected. The Coventry Heritage at Risk register, maintained in partnership with Historic England and administered partly through Coventry City of Culture Trust legacy projects, relies on photographic evidence to track the condition of vulnerable buildings — including properties around Far Gosford Street and the Spon Street medieval row. A second affected programme is the city's street-scene monitoring work linked to the Coventry City Centre South regeneration zone, where site photography forms part of the contractual audit trail. Duplicate entries in those records create the risk of reviewers drawing on outdated or mismatched images without realising it.

The immediate financial dimension is concrete. Cloud storage costs for local authorities have risen sharply since 2022, and deduplication exercises carried out by comparable English councils have demonstrated storage savings of between 20 and 35 percent, based on case studies published by the Local Government Association in 2024. For Coventry, where the digital infrastructure budget has faced year-on-year pressure, even the lower end of that range would represent a meaningful reduction in ongoing licensing costs.

The Decisions That Can't Be Deferred

Three choices now sit on the table for council officers and elected members, and all three carry real consequences.

The first is an automated deduplication pass — running software to identify and flag identical or near-identical image files without human review. It's fast and relatively cheap, but carries the risk of deleting records that look the same but aren't. A photograph of a building taken six months apart may be technically near-duplicate while documenting genuine structural change. For heritage cases, that distinction matters legally.

The second option is a manual audit, prioritising the highest-risk archives first — starting, most likely, with the Cathedral Quarter and Spon Street collections given their heritage sensitivity. This is slower and requires dedicated officer time, but produces a defensible audit trail. Officers would need to agree a triage framework by September 2026 at the latest if the work is to complete before the council's anticipated migration to the new national planning data platform, currently expected in the 2027-28 financial year.

The third path is procurement of a specialist records management contractor to handle the exercise externally. That route would take the pressure off internal teams already stretched by the Coventry City Centre South planning workload, but it introduces procurement timelines and the risk of a contract award running past the migration window.

The scrutiny committee is expected to receive a formal options paper before its autumn recess. Residents and developers with active applications in the system — particularly those in the regeneration zones around Friargate and the Station Quarter — would be wise to request paper copies of any image evidence attached to their cases now, before any deduplication process begins. The council's planning portal, accessible via the Coventry.gov.uk website, allows case documents to be downloaded directly.