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An Excel workbook. Open it in a spreadsheet app to inspect the full example.
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Real public data · A complete worked example

Three spend files, one supplier view

7,787 published lines from three monthly files now feed one numeric GBP ledger and a 1,260-group supplier-name view. 82 groups with case/spacing variants are grouped conservatively; every source line is retained.

Independent public-data demonstration · Not paid client work · Source and limits below

7,787Source linesAll three monthly files, all lines retained
1,260Supplier-name groupsExact normalized names only
82Names with case/spacing variants
11,541,454,677.32Published spending, GBPA sum of disclosed lines, not full departmental expenditure

These are published spending lines, including grants and transfers. Supplier-name groups support a review; they do not independently verify legal companies or comparable purchase prices.

The practical question

Which suppliers account for published spending across October–December 2025, without counting repeated names separately or losing source lines?

The prepared workbook keeps a route back to the original records and includes the checks and open questions. It is a worked example you can inspect, not a claim of client savings or a live operational system.

  • Supplier review
  • Monthly reconciliation

What the work involved

From the source files to a usable result.

  1. Combine three real files

    Keep source month and row number; align the December Expense Area header with the other months.

  2. Make dates and pounds usable

    Decode the actual Windows-1252 files, parse UK dates and currency text, retain amounts to the penny.

  3. Group only defensible supplier matches

    A case/whitespace-only key joins spelling variants. Names with different punctuation or legal suffixes remain separate.

  4. Preserve ambiguity

    Keep repeated references and identical-looking lines; source # markers become explicit missing values rather than invented facts.

  5. Produce a supplier review

    A ranked supplier total and monthly reconciliation are linked to every preserved source line.

Follow actual records

What changed, and why it matters.

The two columns show the same information before and after. New calculations, group labels and questions appear separately beneath them. “[blank]” marks an empty field; the explanation says why. The full source records and the complete change log are included in the downloads.

Example 1

Currency becomes a usable number

Before · source information

Amount
£549,580,000.00
Storage
Text

After · prepared information

Amount
£549,580,000.00
Storage
Number that can be totalled

What changed or was added: The original amount was written as currency text. It is now stored as a spreadsheet number, with the same pound value. This makes numeric totals and sorting possible.

Example 2

Supplier case variants roll together

Before · source information

Names in the source files
  • NETWORK RAIL
  • Network Rail

After · prepared information

Names in the source files
  • NETWORK RAIL
  • Network Rail

What changed or was added: Only capitalization and whitespace are reconciled; distinct legal names are not guessed.

Added to make the record useful

Reporting name
NETWORK RAIL

Example 3

Dates have one unambiguous format

Before · source information

Date
14/10/2025

After · prepared information

Date
2025-10-14

What changed or was added: The day/month source is parsed explicitly before monthly totals.

Example 4

The same expense area joins across all three files

Before · source information

October and november field
Expense Area
December field
Expense Area

After · prepared information

October and november field
Expense Area
December field
Expense Area

What changed or was added: The trailing space is removed before combining files, so the same category stays in one column.

Added to make the record useful

Combined field
Expense area
Source months
October, November and December

Example 5

Unavailable references stay honest

Before · source information

Transaction reference
#

After · prepared information

Transaction reference
[blank]

What changed or was added: The # marker is not treated as one shared transaction; the source row keeps its own traceable ID.

Added to make the record useful

Source row reference
october:6

Checks you can inspect

Every selected record is accounted for.

CheckResult
Original records7,787
Prepared records7,787
Records removed0
Original total (GBP)£11,541,454,677.32
Prepared total (GBP)£11,541,454,677.32
Supplier-report total (GBP)£11,541,454,677.32
Additional identical-looking rows kept17
Rows sharing an entity and transaction reference, kept958
Logged transformations20,895

These checks verify the preparation and grouping rules. They do not certify the underlying source, prove a business outcome or settle the questions listed for review.

Open the complete deliverables

Originals, prepared work and supporting checks.

Start with the prepared workbook. Compare it with the original workbook, or use the CSV files to inspect every row in another spreadsheet app.

The files contain public source data and independently prepared analysis. Native Microsoft Excel testing has not been performed.

Use the result in context

What this example does and does not establish.

  • Complete published October–December 2025 files, not all departmental spending. Disclosure threshold and source coverage apply.
  • Spending includes grants and transfers as well as procurement. Supplier totals are published spend, not comparable unit prices or savings.
  • A matching uppercased name is a reporting convention, not a verified legal-entity identifier. Different legal names and punctuation remain separate.
  • Repeated references and identical-looking lines remain in totals; no evidence supports deleting them. # markers remain unknown.
  • Public data example, not paid client work. No personal contact details added.

Source & reuse

Public evidence, clearly credited.

Department for Transport: spending over £25,000, October–December 2025. Contains public sector information licensed under the Open Government Licence v3.0. Department for Transport, 2026. Modified for this independent demonstration; no endorsement implied.

Open Government Licence v3.0

Prepared for this demonstration from the source downloaded 2026-10-08. Source details, transformations and limitations are included in the files.

Have work like this?

Larger files and more involved reports are welcome. The $125 spreadsheet starter is one defined offer; other work is quoted by size and complexity after review.

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