Done-for-you list cleaning
Free check on your list

Done-for-you list cleaning for UK agencies and consultancies, before you send or call

Send us the list you did not build.

We hand it back ready to work. Every row lands in one of four outcomes, and the removed ones carry the reason.

Send your list

We sell no contact data. When we remove a row, we are not the ones selling you its replacement.

Who it is for

Agencies and consultancies. Marketing, recruitment, anyone who works lists for clients.

HOW THE FREE CHECK WORKS +

Send us your list and pick a call slot. We run it the day before your call and put your own rows on the screen, starting with the people who have moved. That check covers up to two thousand rows. You see the counts and decide.

The free check takes one whole file, roughly 2,000 to 5,000 rows.

An example pass illustrative, not measured

2,106 of 2,400 rows cleared

Every other row is accounted for, with what we found and the date we found it.

2,106
Cleared, in the returned file
218
Exceptions, removed or held, each carrying the reason
76
Could not check, held out of the cleared file
Removed, with the reason
AS IT ARRIVED
A. Whitfield, Head of Marketing, Marlow Ridge Consulting Ltd, a.whitfield@marlowridge.co.uk
WHAT WE FOUND
Address does not accept mail.
DATE CHECKED
22 July 2026
WHERE IT ENDED UP
Removed. It sits in the stopped rows with that reason beside it, in the position it held in the file. Put it back if you disagree. It is your list.
Could not check, held out safely
AS IT ARRIVED
R. Okafor, Operations Manager, Harewell Facilities Ltd, r.okafor@harewell.co.uk
WHAT WE FOUND
Mailbox could not be checked. Sending is a risk we recommend you do not take unread.
DATE CHECKED
22 July 2026
WHERE IT ENDED UP
Held out of the cleared file, and written up in the Decision Brief with the safe default stated. Do nothing and it stays out.
Held, with our position
AS IT ARRIVED
S. Patel, Finance Director, Ashcombe and Vale Ltd, s.patel@ashcombevale.co.uk
S. Patel, Finance Director, Ashcombe and Vale Ltd, spatel@ashcombevale.co.uk
WHAT WE FOUND
The same person appears twice, under two addresses.
WHERE IT ENDED UP
Merge proposed, never applied. Held for your decision.
A LinkedIn profile, found
Namematches the row
Rolematches the row
Employerdiffers from the row
HANDED BACK MARKED UNVERIFIED
Not written into your file as fact.

An example pass. The organisations and people in it are invented and the figures are illustrative, not measured.

The situation

The file that lands on Wednesday for a Friday send

Every new client arrives with a spreadsheet nobody trusts. It came out of somebody else's system, nobody has checked which addresses still accept mail or which numbers are still live, some of those people have moved on, and there are duplicates in it that nobody has counted.

READ MORE +

What usually happens is one of two things. It goes to somebody junior, who can only check what is on the screen. Or it goes out anyway, because the deadline wins.

When it goes wrong, it goes wrong in front of your client.

Doing nothing is free until the bounce report lands.

01
Send us your list
A file handover, nothing to operate.
02
Pick a call slot
Fifteen minutes, on your rows.
03
We run it the day before
Nothing runs until your call is booked.
04
See your own rows on the screen
Keep the one-page summary.
The structure

The four outcomes

This is the shape every row lands in. It is the structure of the work, not a reading of your list. Nothing has run for you yet.

Cleared

In the returned file, in the shape it arrived. Same columns, same order, same headings.

Removed, with the reason

In the stopped rows, with one line of reasoning against it and the date we checked it. Nothing leaves your list silently.

Held, with our position

In the Decision Brief, with what we found, the date, and our recommendation. You confirm or override.

Could not check, held out safely

Out of the cleared file by default, with the safe default stated. Do nothing and it stays out.

The handover

What comes back

Three files and one link.

The cleared file, ready to work, in the shape it arrived. +

Same columns, same order, same headings. Your own word for things stays your word. If nothing was found for a cell, the cell is still empty.

The stopped rows. +

Every row we removed, with one line of reasoning against it and the date we checked it, in the order it appeared in your file. Nothing leaves your list silently. If you disagree with a removal, put the row back. It is your list.

The Decision Brief. +

We take a position on every row we hold, and you confirm or override. The rows we held come with what we found, the date, and our recommendation.

The rows we could not check come with a stated safe default: do nothing, and they stay out of the cleared file, so the list we hand you is safe to work even if you never open the brief.

The changelog, on one page. +

Every change and every removal recorded with what we found and the date. If somebody asks in six months why a row went, the answer is in the record rather than in someone's head.

For agency accounts, a one page note under your name, ready to forward to your client. +

It says their list was checked before anyone worked it, what cleared, what was held rather than guessed at, and what could not be checked. Our name is not on it.

What to send us

Send it in the shape it came out of your system.

The file as it is
NAMEROLEORGANISATIONEMAIL

Your own headers in your own order. Names, roles, organisations and email addresses, however you label them. Empty cells can stay empty.

No link on the row
AS IT ARRIVED
A. Whitfield, Head of Marketing, Marlow Ridge Consulting Ltd, a.whitfield@marlowridge.co.uk

When a row carries no link to a profile, we can only go looking if it has a first name and an email domain.

Where we fit

Why us

We clean what is inside your file and check what sits outside it.

Deduplication tools never check a mailbox. Enrichment platforms never read your file as a file. We do both in one pass and hand back a finished list.

We check that the named contact you already hold is still in role.

A dated finding for every contact we could check, with the evidence behind it. That is the check a business send actually needs.

The tool vendors hand you a platform and a balance to spend.

The list is still your job. We do the job.

How to start

The way in

01
Start with a free check.

Send us the client list you trust least and pick a call slot.

READ MORE +

We run it the day before, email and phone across the whole file and the identity check on up to two thousand rows, and show you three numbers, cleared, exceptions, could not check, with your own rows on the screen while we talk it through. No cost, and if nothing in there surprises you we stop.

02
Then the pass.

One flat price per pass, quoted from your file's size before we start.

READ MORE +

No minimums. No balance to run down, no credits, no surprise charges. A first pass is invoiced when the work is in your hands.

03
The first pass builds your baseline.

Your column mapping, the keys we use to recognise a row again, and your output answers. It is yours.

READ MORE +

The next pass covers what has changed since this one, and if you ever stop we hand the baseline over.

The first check is free. After that, one flat price per pass, quoted from your file's size before we start. No per-row credits, no subscription.

What it costs →
The fit

Who it is for

Agencies and consultancies. Marketing, recruitment, anyone who works lists for clients. If a client has ever handed you a spreadsheet, this is for you.

WHEN IT COMES UP +

It tends to come up when a bought or supplied list arrives, when a big send is going out, when work is handed back to a client, when a new client is onboarded, when a system is migrated, or on a call day.

What you become

The same list, before and after a pass.

As it stands
AS IT ARRIVED
A. Whitfield, Head of Marketing, Marlow Ridge Consulting Ltd, a.whitfield@marlowridge.co.uk

Nobody trusts the file. Every send is a gamble on who has moved, what will bounce, and which rows are the same person twice.

After a pass
AS IT ARRIVED
A. Whitfield, Head of Marketing, Marlow Ridge Consulting Ltd, a.whitfield@marlowridge.co.uk
WHAT WE FOUND
Address does not accept mail.
DATE CHECKED  22 July 2026

You work the cleared file without second-guessing it: what was removed carries the reason, what was uncertain was held, and nothing left silently.

An example pass. The organisations and people in it are invented and the figures are illustrative, not measured.

House rules

How we work

We recommend, you decide. Disagreements are shown, not guessed. We never put a claim in your file we cannot back. We propose merges, we never apply them. We sell no contact data, so we have nothing riding on how your list looks. We publish our test methods.

Send your list

The free check takes one whole file, roughly 2,000 to 5,000 rows.