Analysing Documents for Investigative Stories | UK JournoHub

Last reviewed: 21 May 2026Next review due: 21 November 2026

Why document analysis is at the heart of investigative journalism

Documents are the most reliable raw material for an investigation. Unlike sources, they do not have memories that fade, agendas that shift, or legal exposure that might cause them to recant. A company annual report filed at Companies House, a council cabinet report approved by elected members, or an audit opinion signed by a registered auditor: these are primary sources in the strictest sense.

Document analysis is not just about finding the numbers. It is about understanding what a document is designed to show — and what it is designed to conceal. Annual accounts are prepared to satisfy legal minimum requirements; they are not prepared to help journalists. Council reports are written to justify decisions that have already been made. FOI disclosures may be accurate but strategically incomplete. Learning to read what is missing, as well as what is present, is the core skill.

UK journalists have access to an unusually rich set of mandatory public filings. Companies must file accounts at Companies House. Councils must publish agendas and minutes. Planning authorities must publish applications and decisions. Public bodies must publish expenditure over £25,000. Understanding the format and limitations of each type of document is what separates a data-literate journalist from one who misreads or overlooks a crucial disclosure.

Key document types for UK investigations

Company annual accounts

Filed at Companies House. Include profit and loss account, balance sheet, cash flow statement, and notes. Small companies may file abbreviated accounts. Micro-entities file only a balance sheet. Always check the accounting period — accounts may be 12-18 months old. Read the notes for related-party transactions, director loans, and contingent liabilities.

Council cabinet and committee reports

Published on council websites before meetings under the Local Government Act 1972. The agenda, report, and appendices are public. Exempt appendices (withheld from publication) are a common story — challenge them via FOI. Minutes record decisions taken; compare them with the recommendation in the report.

Planning records

Planning applications, officer reports, committee decisions, and appeal decisions are public. Available on local authority planning portals. The officer's report recommends approval or refusal — check whether the committee's decision follows the officer's recommendation, and if not, why not.

FOI disclosure logs

Many authorities publish lists of FOI requests received and responses given. WhatDoTheyKnow.com archives thousands of published responses. Disclosure logs reveal what questions other journalists and researchers have been asking — and what answers they received.

Audit reports

External auditors issue annual audit opinions on council and NHS accounts. Read for "emphasis of matter" paragraphs and going concern qualifications. The National Audit Office publishes value-for-money reports and departmental audit certificates. Local audit reports are published on authority websites and the NAO's portal.

Procurement and contract documents

Government contracts over £10,000 must be published on Contracts Finder. Post-Brexit procurements appear on the Find a Tender Service. Contract award notices show supplier name, value, and duration. Request the contract itself via FOI — commercial confidentiality exemptions are often overused.

When document analysis is most valuable

1A source tells you a company is in financial trouble — verify it against Companies House accounts before publication.
2A council claims a contract was awarded fairly — cross-reference the award notice with director relationships in the PSC register.
3A public body says it followed correct procedure — check the committee minutes against the statutory requirements.
4You have a leak but need documentary corroboration before you can publish safely.
5You need to establish a timeline — public filings provide dated, contemporaneous records.
6A subject denies a claim — a signed document bearing their name is difficult to dispute.
7You are investigating a pattern of behaviour over time — historic filings build the narrative.

Red flags in public documents

Accounts filed very late or after the Companies House deadline — suggests financial or organisational difficulty.
Going concern qualification in the auditor's opinion — the auditor doubts the organisation will survive.
Unexplained spikes in specific expense categories — particularly "consultancy", "management charges", or "other costs".
Related-party transactions disclosed in the notes — a company paying its director's other company is a red flag.
Exempt appendices to council reports — the withheld section often contains the most important information.
Nil-filed accounts at Companies House for an apparently active company.
Planning officer recommends refusal but committee approves — especially if councillors have links to the applicant.
Procurement contracts awarded without a competitive tender — check the justification for direct award.

Document analysis checklist

I have obtained the original document from the primary source, not from a secondary summary.
I have noted the document's date, the period it covers, and who signed or approved it.
I have read the full document — including appendices, notes, and schedules — not just the executive summary.
I have identified all persons and entities named in the document and searched for their relationships.
I have cross-referenced financial figures with other available documents (accounts, contracts, FOI responses).
I have checked for internal inconsistencies — figures that do not add up, dates that contradict each other.
I have noted what the document does not address that you would expect it to — deliberate omissions.
I have preserved a timestamped copy of every document in an encrypted folder.
I have kept a research log with source URL, access date, and search methodology for each document.
For financial documents: I have had any figures I am relying on checked by a qualified accountant or data journalist.

Tools for document-based investigations

Use our FOI Request Builder to obtain documents not yet publicly available, and our Investigation Risk Register to track your evidence chain.

FOI Request Builder Investigation Risk Register

Common mistakes

Reading only the executive summary or headline figures — the story is almost always in the detail.
Treating accounts as current when the accounting period may be 12-18 months ago.
Confusing turnover with profit — a company can have high revenue and still be losing money.
Misreading abbreviated accounts as full accounts — small company filings deliberately omit the profit and loss account.
Overlooking the notes to the accounts — related-party transactions and contingent liabilities are disclosed there.
Publishing figures from a document without understanding what the figure represents or the accounting period it covers.
Not keeping the original document — relying on your notes rather than the source.
Failing to put figures to the subject for comment, especially where you may have misread an accounting convention.

Related guides

UK OSINT Toolkit

Finding public documents through open-source intelligence techniques.

Corporate Investigations

Companies House, PSC register, and following corporate structures.

How to File an FOI Request

Obtaining documents that are not yet public through FOI.

Handling Document Dumps

Protocols for receiving and verifying large document sets from sources.

Primary sources

Frequently asked questions

What are the most important figures to look for in a company's annual accounts?

Start with the profit and loss account: is the company profitable, and has that changed? Look at the balance sheet for net assets — a company with more liabilities than assets is technically insolvent. Check the cash flow statement: companies can report profits while running out of cash. Read the notes carefully — related-party transactions, director loans, and contingent liabilities are often buried there. The auditor's report will flag any "going concern" doubts.

How do I read a council cabinet report?

Council cabinet reports follow a standard format: executive summary, background, options considered, recommendation, financial implications, legal implications, and appendices. The financial implications and appendices sections are where the story often lives. Look for undisclosed costs, vague legal advice, missing risk assessments, and appendices that have been redacted or withheld entirely. Compare the recommendation with what the options section says — sometimes the recommended option is not the best on the stated criteria.

How do I find FOI disclosure logs?

Many UK public authorities publish FOI disclosure logs on their websites — a list of all requests received and responses given. Search for "disclosure log" + the authority name. WhatDoTheyKnow.com is the most comprehensive archive of published FOI responses across UK authorities. Before filing a new request, always check the disclosure log and WhatDoTheyKnow first — you may find the information has already been released.

What is a Section 114 notice and why does it matter?

A Section 114 notice is issued by a council's chief financial officer when the authority cannot balance its budget. It is effectively a financial emergency declaration. Issued under the Local Government Finance Act 1988, it triggers a freeze on new spending commitments. The notices are public documents. They have been issued by Nottingham City Council, Thurrock, Birmingham, Woking, and others — and often signal years of undisclosed financial mismanagement that makes for significant investigative stories.

How should I preserve documents as evidence?

Create a secure, dated copy of every original document: download PDFs, screenshot webpages with timestamps, and save source URLs. Never rely solely on a link — web pages are taken down. Store originals in an encrypted folder and make at least one backup. Keep a research log recording when you obtained each document, from where, and what search you used to find it. If a document was provided by a source, note the chain of custody — who had it and how it reached you.

Primary sources

Companies House — Company Search and Filing History— Companies House
WhatDoTheyKnow — FOI Disclosure Archive— mySociety
Contracts Finder — Government Contracts over £10,000— Cabinet Office
National Audit Office — Audit Reports and VFM Studies— NAO
Local Government Finance Act 1988 — s.114 Notices— legislation.gov.uk
Local Government Act 1972 — Public Access to Documents— legislation.gov.uk
ICIJ Data Journalism Academy — Document Analysis Guides— ICIJ