Coventry's Duplicate Image Problem: The Key Decisions That Will Shape the City's Visual Records

Coventry City Council's digital asset management system holds thousands of duplicate photographs — some images filed three or four times under different reference numbers — and the question of how to resolve the backlog is now sitting squarely on the desk of the council's Digital Services team ahead of a scheduled audit completion date of 31 October 2026. The problem has been building for years across multiple departments, and the decision about how to fix it carries real consequences for local heritage, planning records, and taxpayer money.

The timing matters. Coventry's archives, including the photographic collections held at the Herbert Art Gallery and Museum on Jordan Well, have been undergoing digitisation since the city's UK City of Culture year in 2021, a process that accelerated ingestion rates without always enforcing strict deduplication protocols. Five years on, the result is a sprawling catalogue with significant redundancy baked in. Getting it wrong now means locking in inefficiency for another decade.

What the Review Has Already Found

The council's Digital Services team, working alongside Coventry Archives on Mandela Avenue, identified the duplication issue during a routine storage capacity review earlier this year. Preliminary findings, shared internally in May 2026, suggest that between 15 and 20 per cent of image files across the combined civic and heritage digital stores may be true duplicates — identical files stored under different metadata tags. That figure, if confirmed by the October audit, would represent a significant drain on server capacity that the council has been paying to maintain through its managed cloud storage contract.

Storage is not cheap. Local government cloud contracts of similar scale across comparable English cities have been running at between £40,000 and £80,000 annually, though the council has not published its specific contract value for this arrangement. What is clear is that reducing redundant files by even 10 per cent would generate measurable savings that could be redirected toward the Herbert's ongoing digitisation programme or toward Coventry Libraries' community archive project, which has been cataloguing neighbourhood photographic collections from areas including Foleshill, Tile Hill, and Stoke.

The harder question is not storage cost but editorial authority. Some files that appear identical at a technical level carry different provenance notes — one copy might be tagged to a planning application on Gosford Street, another to a heritage trail record. Deleting the wrong version, or merging records carelessly, could strip out contextual metadata that researchers and planning officers rely on. That is why the Digital Services team has recommended a human-review stage before any automated deduplication tool is deployed, a recommendation that adds time and labour cost to the process.

The Decisions That Cannot Wait

Three choices now face the council and its partner organisations before the October deadline. First: whether to run a fully automated deduplication pass, which is faster but risks data loss, or a hybrid model combining algorithm-flagging with manual sign-off, which is slower but safer for fragile heritage records. Second: whether the Herbert and the Archives on Mandela Avenue operate separate cleaned catalogues going forward or integrate into a single unified system — a governance question that touches on funding streams and departmental autonomy. Third: who owns the deduplication sign-off for images that span both planning and heritage use, a jurisdictional gap that has already caused delays on at least one Friargate development documentation set this spring.

The practical timeline is tight. An October audit completion leaves very little runway before the council's budget-setting cycle begins in November, when Digital Services will need to make the case for any additional resource. Coventry Councillors on the Scrutiny Board for City Services are expected to receive a progress report at their September sitting, which will be the first public airing of the audit's interim conclusions.

For residents and researchers, the most immediate advice is straightforward: anyone relying on digitised photographs from Coventry's civic or heritage collections for planning applications, academic work, or community projects should verify reference numbers directly with Coventry Archives before citing or reproducing material. Until the October audit is complete, the risk of pulling a duplicate record — one that may lack full provenance data — remains live.