What should a document scanning proposal include?

A complete proposal should state the measured volume, document preparation responsibilities, scanning resolution and output format, indexing fields and naming convention, the quality control process, security and chain of custody arrangements, a GDPR-compliant data processing agreement, what happens to originals afterwards, pricing mechanics including exclusions, and a delivery timeline.

What are the most common hidden costs in scanning proposals?

The usual culprits are document preparation charged separately from the scanning rate, extra index fields billed per field, collection and transport fees, minimum charges, handling for non-standard items like large-format plans or bound books, and volume variance charges when the archive turns out larger than the estimate.

Should I run a pilot before a full scanning project?

Yes. A small paid pilot of one to five boxes processed under the proposed specification verifies image quality, OCR and index accuracy, and turnaround on your real documents before you commit the whole archive. Build the pilot's acceptance criteria into the contract so the full project only proceeds once the sample is signed off.

Is a document scanning provider a data processor under UK GDPR?

Yes. When a provider handles documents containing personal data on your behalf, they act as a data processor and you remain the controller. Article 28 of UK GDPR requires a written data processing agreement, and the ICO can fine up to £17.5m or 4% of global turnover for serious infringements, so security terms in the proposal are a compliance matter, not a formality.

What happens to original documents after scanning?

There are three standard routes: return to your premises, transfer into secure off-site document storage, or confidential destruction with a certificate under BS EN 15713. The proposal should make this your documented decision rather than a default, because destroying originals you still needed is irreversible.

How to Review a Document Scanning Proposal Before You Sign Off

Reviewing a document scanning proposal properly means checking six things before anything else: the scope of what is actually being scanned, how images will be captured and quality-checked, how files will be named and indexed, how your originals are secured in transit and afterwards, what the commercial terms cover (and exclude), and what happens if something goes wrong. A proposal that is vague on any of these is a proposal that will cost you later — either in change orders, in unusable files, or in a compliance gap you only discover during an audit. This guide walks through each area with the specific questions UK businesses should be asking before they sign.

Start with Scope: What Exactly Is Being Scanned?

The single most common source of dispute in scanning projects is a mismatch between what the client thought was included and what the provider quoted for. Before you look at the price, check that the proposal states, in writing:

Volume, in a measurable unit — number of standard archive boxes, linear metres of shelving, or an estimated page count. “Your HR archive” is not a scope.
Document preparation — who removes staples, paperclips, treasury tags and bindings, and whether prep is included in the quoted rate or charged separately. Prep is often 30–50% of the labour in a scanning project, so an “excluded” here changes the real cost dramatically.
Non-standard items — large-format plans, bound books, photographs, thermal paper (which fades), and double-sided pages. Each needs different handling, and proposals frequently price only for standard A4.
Exclusions — a good proposal lists what is not covered as clearly as what is.

If the provider has not physically surveyed your archive or asked for a sample, treat the volume estimate as provisional and ask how re-measurement is handled. A worked example helps: a standard archive box holds roughly 2,000–2,500 sheets, so a 200-box project is around 400,000–500,000 images. If the proposal’s page assumptions do not roughly reconcile with your box count, query it before signing, not after.

Check the Technical Specification Line by Line

Image capture standards

The proposal should state the scanning resolution (300dpi is the sensible standard for business records), colour mode, and output format. For records you may need to rely on for years, ask for PDF/A — the ISO-standardised archival format — rather than ordinary PDF. If OCR is included, the proposal should say so explicitly and describe how accuracy is verified, because “OCR included” can mean anything from carefully quality-checked text to a raw, unreviewed pass. Our guide on whether poor OCR accuracy can make scanned files useless covers what good looks like.

Indexing and file naming

This is where scanning projects most often fail to deliver value. The proposal must specify the index fields being captured (for example: employee name, document type, date for HR files), how many fields are included in the price, and whether indexing is manual, automated, or a mix. Extra index fields are a classic hidden cost — each one adds keying time across every document. Agree the naming convention in writing before the project starts; retro-fitting one across half a million files is expensive and demoralising.

Quality control

Look for a described QC process, not a promise. Reasonable expectations include double-capture checks for page counts, sample-based image inspection with a stated sample rate, and a defined rescan procedure when defects are found. Ask what percentage of images are checked and what the acceptance threshold is. If the proposal is silent on QC, assume there isn’t a process.

Scrutinise Security, Compliance, and Chain of Custody

Your originals will leave your premises, which makes this a data protection matter under UK GDPR and the Data Protection Act 2018 — and the ICO can fine up to £17.5m or 4% of global turnover for serious infringements. The provider is acting as a data processor, so the proposal (or the contract behind it) must include a written data processing agreement under Article 28. Beyond the paperwork, check for:

Tracked collection — sealed, barcoded boxes, vetted drivers, and a signed chain of custody from your door to the scanning facility.
Facility security — CCTV, access control, fire suppression, and staff vetted to BS 7858 or equivalent.
Certifications — ISO 27001 for information security and ISO 9001 for quality are the ones that matter; ask for current certificates, not logos on a footer.
Secure delivery of digital files — encrypted transfer, not unencrypted drives in the post.

The proposal should also state what happens to your originals afterwards: returned to you, moved into secure document storage, or destroyed with a certificate of destruction under BS EN 15713. Whichever route you choose, it should be your documented decision — never a default buried in the small print.

Test the Commercial Terms for Hidden Costs

Scanning quotes are hard to compare because providers structure pricing differently — per image, per box, or per project. Rather than fixating on the headline rate, check the mechanics:

Is collection and transport included, and for how many collections?
Is document prep in the rate, or a separate hourly charge?
What does a rescan cost if QC failures are found after delivery?
Are there minimum charges, project management fees, or media/delivery fees?
How are volume variances handled if the archive turns out bigger than estimated?

Also confirm the timeline and any service levels: throughput per week, the completion date, and — if you’ll need documents mid-project — whether scan-on-demand retrieval is available while boxes are at the facility. A proposal with no delivery schedule is a proposal with no commitment.

Run a Pilot Before You Commit the Whole Archive

The cheapest insurance available is a small paid pilot: one to five boxes, processed end to end under the proposed specification. A pilot verifies image quality, OCR accuracy, index accuracy, and turnaround on real documents rather than promises — and it surfaces prep issues (staples, fragile paper, odd sizes) while they are still cheap to resolve. Any provider confident in their proposal will welcome one. If they resist, that tells you something. Build the pilot’s acceptance criteria into the contract, so the full project only proceeds once the sample output has been signed off by the people who will actually use the files day to day.

Reviewed this way, a scanning proposal stops being a price to approve and becomes a specification to hold your provider to. For a broader look at the selection process, see our guide to choosing a document scanning company in the UK, or explore our document scanning services to see how a well-specified project runs.