Welcome to Margaret Langstaff Editorial

Professional Book Editor, Copy Editor, Proofreader,
Writing & Publishing Consultant

Member of the NBCC National Book Critics Circle

Member of the NBCC National Book Critics Circle



Margaret Langstaff Editorial ServicesMargaret Langstaff Editorial is a full-service professional editing and publishing consultancy. We provide a complete range of editing and writing services individually tailored to your needs and budget.

Also, we offer first-rate professional publishing and marketing consultation to increase the size of your audience and the impact of your message.

For our many and varied clients, we write and edit books, stories, white papers, speeches and business communiqués, preparing them for immediate publication or delivery, completely polished, compelling, and persuasive.

Editorial ExcellenceOur goal is to create the perfect text for your project, one that exceeds your expectations and helps you achieve your ambitions.

Our clients are brand name publishers, prominent traditionally published authors, and novice writers intent on self-publication. We also serve busy professionals and business executives, catering to the specific communication needs of their positions and careers.

Editorial Excellence

Headed up by veteran editor Margaret Langstaff, a book editor with over 25 years writing and editing experience with publishers and writers of all kinds, our services are top-of-the-line and unparalleled.

Whatever your needs or project, we have got you covered. We are equally expert at editing fiction and non-fiction in all genres, including poetry. Some of the more popular services we provide:

  • Manuscript critique and evaluation
  • Developmental editing
  • Substantive editing
  • Line editing
  • Copyediting
  • Proofreading
  • Website copy
  • Digital content creation

Query Letters and Book Proposals

We even offer publishing advice and help with publisher query letters and book proposals, if needed.


For clients who do not have the time or expertise to write their books, we take their ideas and concepts and, working anonymously behind the scenes, produce a high quality and original book-length manuscript. A finished manuscript ready for the publisher or printer, an impressive work of which you can be very proud and which will enhance your reputation.

Personal, Individualized Attention to Your Specific Needs

We are not a faceless “editing mill,” where all manuscripts receive one-size-fits-all editorial processing from a mob of indifferent editors of dubious talent and experience. We get to know our clients, we listen to them carefully and offer them well-considered advice, suggesting services uniquely suited to their individual needs. We keep our clients’ best interests foremost in mind and take care to keep them informed throughout the editing or writing process. We are always easy to reach!

While we have terms and policies, they are not rigid. We are flexible, easy to approach, and are always interested in the author’s views and concerns.

We understand all too well that writing is difficult, time-consuming, and that a writer has a lot invested in a book. We are sensitive to your apprehensions and anxieties, and we understand and respect a writer’s dreams and ambitions. We see our job as doing the best we can to make them a reality through expert editorial attention.

If you want personal, individualized attention from a top-tier professional book editor, attention guaranteed to make your book the best it can be, you have come to the right place.

Manuscript Evaluation Expert