You will get your messy data cleaned and structured for CRM or analysis
Project details
I take messy, inconsistent data and return a clean, structured file you can import into a CRM, drop into a spreadsheet model, or hand to a developer without embarrassment.
Most data cleaning jobs I see have the same problems: duplicate rows under slightly different names, phone numbers in four different formats, columns split wrong on export, postcodes with trailing spaces, and company names that are three variations of the same thing. I fix all of that systematically, not row by row.
My own data infrastructure processes millions of UK company records across Companies House, the ICO register and the PSC register. The cleaning logic I have built for that is the same logic I apply to client data.
What I return: a clean file in your chosen format (CSV, Excel, SQLite), a short note on what was changed and why, and a duplicate count so you can see what was removed. On Standard and Premium tiers I include a data quality summary.
Three fixed-price packages below. If your brief does not fit neatly, message me and I will scope it.
Most data cleaning jobs I see have the same problems: duplicate rows under slightly different names, phone numbers in four different formats, columns split wrong on export, postcodes with trailing spaces, and company names that are three variations of the same thing. I fix all of that systematically, not row by row.
My own data infrastructure processes millions of UK company records across Companies House, the ICO register and the PSC register. The cleaning logic I have built for that is the same logic I apply to client data.
What I return: a clean file in your chosen format (CSV, Excel, SQLite), a short note on what was changed and why, and a duplicate count so you can see what was removed. On Standard and Premium tiers I include a data quality summary.
Three fixed-price packages below. If your brief does not fit neatly, message me and I will scope it.
Data Tool
PythonWhat's included
| Service Tiers |
Starter
$100
|
Standard
$300
|
Advanced
$750
|
|---|---|---|---|
| Delivery Time | 1 day | 3 days | 5 days |
Number of Revisions | 1 | 2 | 2 |
Frequently asked questions
3 reviews
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SD
Sam D.
Jul 8, 2026
B2B Research Assistant Needed for UK Company & Contact Research
Leon fully understood the brief and took on board feeback and guidance throughout the work to deliver the research to a high quality
AW
Alex W.
Apr 17, 2026
B2B Data Researcher (UK Coffee Industry)
It was a pleasure to work with Leon. He listened, understood the task and delivered it on time. We will be back when we need more data!
Definitely well recommended!
Definitely well recommended!
JB
John-Paul B.
Apr 2, 2026
Lead Generation for the Embroidery Industry.
Leon was great to work with. He handled lead generation for the embroidery industry professionally and delivered exactly what was needed. Communication was excellent throughout the project: clear, consistent, and proactive, which made the whole process smooth and stress-free.
This was a fixed-price contract, and Leon met expectations on both quality and reliability. I’d definitely recommend him and would be happy to work with him again.
This was a fixed-price contract, and Leon met expectations on both quality and reliability. I’d definitely recommend him and would be happy to work with him again.
About Leon
Data Analyst & Developer | Python | UK
75%
Job Success
Albrighton, United Kingdom - 8:25 pm local time
My background is in data intelligence. I built my own infrastructure processing millions of UK company records across Companies House, the ICO register, Land Registry and the PSC register. The same methods I use on that scale, systematic cleaning, enrichment, trend analysis, anomaly detection, are what I bring to client work.
What I do:
- Data analysis and reporting: explore a dataset, surface the patterns, write up the findings in plain English with charts. Suitable for one-off questions or ongoing tracking.
- Data cleaning and structuring: deduplicate, normalise, fix types and formats, output a file ready to import into a CRM or analyse in Excel. Same logic I apply to millions of rows.
- Lead data and B2B intelligence: UK company lists with verified contacts, sourced from public registers and SMTP-verified. No Apollo exports.
- Custom Python pipelines: scrapers, enrichment workflows, data joins across multiple sources.
I work in Python (Pandas, Matplotlib, requests, BeautifulSoup), SQL, and Excel. I deliver in whatever format you need: CSV, Excel workbook, PDF report, SQLite, or a Python script you can rerun.
If you have data that needs thinking, not just clicking, message me and I can scope it in five minutes.
Steps for completing your project
After purchasing the project, send requirements so Leon can start the project.
Delivery time starts when Leon receives requirements from you.
Leon works on your project following the steps below.
Revisions may occur after the delivery date.
You share a sample and describe the problems and the target output format.
I audit scope: cleaning plan, enrichment, and what the output looks like.