Bristol Council's duplicate image audit flags hundreds of redundant files across public planning portal

Bristol City Council confirmed this week that an internal audit of its public-facing planning portal — the system used by residents to view applications, heritage assessments and street-level surveys — has identified several hundred duplicate image files that have accumulated since the platform was migrated to a new content management system in March 2024. The council's Digital Services team began the replacement process on Monday, working through a queue of duplicated photographs and scanned documents attached to live planning records across the city.

The problem matters now because Bristol is in the middle of processing some of the highest volumes of planning applications it has seen in a decade, particularly around the Temple Quarter regeneration zone and the approved housing developments along Bedminster Green. Duplicate records slow caseworkers' ability to cross-reference documents and have, in at least a handful of cases reviewed internally, caused delays when members of the public attempted to access correct image versions attached to formal objection submissions.

Where the problem showed up

Two areas of the city generated the bulk of the flagged duplicates. The first cluster relates to listed building consent applications in Clifton and Clifton Wood, where Victorian property surveys were uploaded multiple times during a batch-import exercise carried out by the council's Historic Environment team in late 2024. The second and larger cluster involves streetscape photographs submitted alongside planning applications in Easton and St Pauls, where a software glitch in the council's document-upload interface between October and December 2024 created automatic duplicate copies of any image file larger than 2MB.

Bristol's planning portal is administered through the Idox Uniform system, which the council shares with a consortium of other local authorities in the South West. The Idox platform was updated to version 9.4 in autumn 2024, and council officers have since been working with Idox support staff to establish whether the upload glitch was a known issue affecting other consortium members. The Bristol Civic Society, which regularly monitors planning submissions affecting the city centre and inner suburbs, raised concerns in its May 2025 quarterly bulletin about search results returning inconsistent document sets — a symptom consistent with the duplicate image problem now being addressed.

Replacing or suppressing duplicate image records on a live planning database is not straightforward. Each file must be checked manually to confirm it is a true duplicate rather than a revised or amended version of the same photograph — a distinction that matters enormously in heritage cases where a single image may document structural changes over time. The Digital Services team has allocated three full-time officers to the task for July, working from the council's 100 Temple Street offices.

What this means for planning applicants

For anyone with a live application currently lodged with the council — particularly those covering the BS2, BS3 and BS6 postcode areas where the duplicate clustering was heaviest — officers are advising applicants to double-check their public case file through the council's planning search tool and flag any apparent document errors directly to the planning support inbox rather than waiting for a caseworker to identify the problem independently. The council's stated processing target for general householder applications remains eight weeks, and officers say the audit work is not expected to push standard decisions beyond that window.

Longer term, Bristol City Council is understood to be evaluating whether to move its planning document management to a cloud-based storage system separate from the Idox front end — a change that would require sign-off from the council's cabinet and is unlikely to be implemented before 2027 at the earliest. In the meantime, any member of the public who submitted images as part of a planning representation since October 2024 and wants confirmation that the correct version of their document is on the official record can contact the planning support team, whose contact details are listed on the Bristol City Council website under the Planning and Building Control section.