The Final Manuscript Checklist: 15 Things to Check Before Submitting to UK Agents
October 04, 2026

The Final Manuscript Checklist: 15 Things to Check Before Submitting to UK Agents

The manuscript is finished, and the relief lasts about a day. Then comes the part nobody warns you about: preparing the submission itself. Agents read quickly, and plenty of promising submissions are set aside for reasons that have nothing to do with the writing. A wrongly named file, a synopsis that stops before the ending, a word count given as 187,432. None of it is difficult to fix. It just has to be checked, in order, before you press send.

Read the Guidelines Twice, Then Follow Them Exactly

Every agency sets its own rules, and they are not interchangeable. One wants a synopsis and three chapters. Another wants the first fifty pages. A third wants a short pitch in the body of an email and no attachments at all. Sending a full manuscript to an agent who asked for a sample does not show enthusiasm; it shows that you did not read.

Before you send anything, open the submissions page and note down:

  • The exact materials requested
  • Whether they want attachments or text pasted into the email
  • Preferred file format and any stated limits
  • The name and title of the person you are writing to
  • Whether they are open to submissions, and when

If the guidelines contradict anything below, the guidelines win. Always.

Formatting: the Boring Details That Do Real Work

Standard manuscript format exists so that an agent can read two hundred pages without friction. You do not need to be inventive here.

The basics

  • A readable serif or sans-serif font at 11 or 12pt
  • Double spacing throughout, including indented passages
  • Margins of roughly 2.5cm, left-aligned rather than justified
  • First-line indents for new paragraphs, with no blank line between them
  • Page numbers in the header or footer, with your surname and title alongside
  • A new page for each chapter, and one consistent marker for scene breaks

The title page needs your name, contact details, the title, the category and the word count. Nothing else. Skip decorative fonts and the copyright symbol.

Language and consistency

Use British spelling throughout, and check it rather than trusting your memory: realise, colour, organise, travelled, defence. If you drafted on a US-based spellcheck, mixed conventions will have crept in. Dialogue punctuation catches people too. UK publishing typically uses single quotation marks, with double marks for a quote inside speech, but consistency matters more than the choice. Set your spellcheck to UK English and apply one style from page one to the end.

Word Count: What to Write and Where

Put the word count on the title page, rounded to the nearest thousand. Not 89,347; 89,000. If the agent asks for it in a cover letter or an online form, use the same figure in both places.

Do not inflate it to sound substantial or shave it to sound tight. Agents can estimate length from the sample, and an inaccurate number makes them doubt everything else you have told them.

It also helps to know where your book sits. Adult literary and upmarket commercial fiction commonly falls somewhere between 70,000 and 100,000 words, with genre fiction often running longer and some categories deliberately lean. Children's and young adult books are shorter. These are conventions, not laws, and a strong book can break them. But if your manuscript falls well outside the usual range, know your reasons before an agent asks.

The Synopsis, the Cover Letter and the Rest of the Package

Synopsis

Most UK agents ask for one page; a few ask for two, and some accept a longer outline. Where the guidelines are silent, one page is the safer bet.

Write it in the present tense and third person, keep the main character's arc at the centre, and include the ending. This is the mistake that catches most writers: a synopsis that builds tension and then stops, as though an agent might take on the book to find out what happens. They will not. Name the twist, resolve the mystery, say who lives and who does not.

Cover letter or email

Keep it short. One paragraph of genuine, specific reason for approaching this particular agent: a book they represented, a subject they have said they want, a talk you attended. One paragraph about your book: title, category, word count, and what happens. One short paragraph about you, but only if it is relevant, such as previous publications, relevant professional experience or a course that means something.

Comparison titles work only when they are accurate and recent. "For readers of X and Y" is useful if both titles are recognisable and genuinely comparable. Leave it out otherwise.

File Names, Formats and Email Housekeeping

Guidelines override preference. If an agent wants a PDF, send a PDF. If they ask for .docx, do not send an export from another program. Where there is no instruction, .docx is the safest default.

A clear naming convention saves the agent work and makes you look organised:

Adeyemi_TheLongField_Synopsis.docx
Adeyemi_TheLongField_FirstThreeChapters.docx

Keep the surname identical to the one in your email signature, avoid version numbers such as final-final-v3, and skip spaces and unusual punctuation where you can.

If the sample must be pasted into the email, paste the chapters and nothing else. No introduction explaining what follows, no elaborate formatting that will collapse in transit. Check that your spacing and indents survive the paste. Then send the whole thing to yourself and read it on a phone before it goes anywhere else.

The Fifteen-Point Final Checklist

  1. The agency is still open to submissions, in the format requested.
  2. Your material matches their list exactly, with nothing extra and nothing missing.
  3. The agent's name and the agency's name are spelled correctly.
  4. The title page carries name, contact details, title, category and rounded word count.
  5. Font, spacing, margins and indents are consistent throughout.
  6. Page numbers appear on every page with your surname and title.
  7. Chapters begin on new pages and scene breaks read clearly.
  8. Spelling is British and consistent, with the spellcheck set to UK English.
  9. Dialogue punctuation and quotation marks are uniform.
  10. No stray comments, tracked changes or highlighting remain in the file.
  11. The synopsis is within the stated length, in present tense, and includes the ending.
  12. The cover letter names the right agent and contains no placeholder text.
  13. File names follow one convention and match the title used in the letter.
  14. Attachments open cleanly; you have tested them on a second device.
  15. You have read the first page aloud and fixed anything that trips you up.

Before You Press Send

Read the whole submission once as though you were the agent, with the guidelines page open in one tab and your draft in another. Then walk away for a few hours. Typos that were invisible on the first pass tend to surface on the second.

The waiting afterwards is the hard part, and it is long at most UK agencies. Keep writing while your submission is out; the next project is the best thing you can do with the time. If a rejection arrives with a specific note, take it seriously and send the work out again, a little sharper than before.

Photo: cocoparisienne / Pixabay

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