Business Letter Format: UK Guide, Examples & Template

A well-structured business letter helps the reader understand who is writing, why the message matters and what should happen next. At eLearning College, we treat professional writing as a practical workplace skill: formatting matters, but clarity, accuracy and an appropriate tone matter just as much.

This guide explains a practical UK business letter format, shows how each section works and gives examples you can adapt for real workplace situations. If you want to build broader administrative and written-communication skills, explore our online Secretary and Personal Assistant courses alongside the rest of our professional learning options.

What Is a Business Letter?

A business letter is formal written correspondence used between organisations, professionals, customers, suppliers, public bodies and other parties. It may be printed, attached to an email, saved as a PDF or generated from an organisation's document system. Whatever the delivery method, the purpose is the same: to communicate a professional message in a clear, organised and traceable form.

Business letters are commonly used for formal requests, complaints, responses, job-related correspondence, quotations, confirmations, notices, proposals and communications that need a more permanent record than a quick message or chat.

How to Format a Business Letter in the UK

Start with accurate sender and recipient details

If your organisation uses headed paper, the sender's address may already be present. Otherwise, include enough information for the recipient to identify and reply to you. Check names, job titles, departments and postal details carefully. A correct message sent to the wrong person is still ineffective.

Use a precise subject line when it helps

A subject such as “Request for revised delivery date” is more useful than a vague heading such as “Delivery”. Include an invoice, order, case or account reference when it will help the recipient locate the relevant record.

Open with the purpose

The first paragraph should tell the reader why you are writing. Avoid a long introduction when one direct sentence will do. For example: “I am writing to confirm the arrangements for…” or “I am writing to request…”

Organise the body around the reader's needs

Use short paragraphs and put the most important facts before background detail. If several actions, documents or dates are involved, a concise bullet list may be clearer than a dense paragraph.

End with a clear next step

Where a response is required, say what you need and, if relevant, when you need it. You might ask for confirmation, provide a contact route or explain what you will do next.

Proofread for facts as well as language

Spelling and grammar matter, but factual errors can be more damaging. Recheck names, dates, amounts, references, attachments and contact details before sending.

UK Business Letter Example

Reusable Business Letter Template

Business Letter Tone: Professional, Not Overwritten

Professional writing is usually strongest when it is courteous and direct. A business letter does not need to sound old-fashioned or complicated. Use straightforward vocabulary, precise verbs and sentences that make the required action easy to identify.

Avoid slang, sarcasm, emotional language and unnecessary jargon, particularly in complaints, disputes or sensitive correspondence. If you are writing to explain a problem, separate the facts from your opinion and state the resolution you are seeking.

Choosing the Right Level of Formality

Formal

Best for first contact, complaints, applications, contractual matters, official requests and correspondence with public bodies or senior stakeholders.

Semi-formal

Suitable for established clients, suppliers or colleagues where professionalism remains important but the relationship allows a warmer tone.

Concise operational correspondence

Useful for routine confirmations, delivery changes, meeting arrangements and straightforward requests. The letter can still be formal without being long.

Common Business Letter Mistakes

• Burying the purpose several paragraphs into the letter.
• Using a generic subject line that does not identify the matter.
• Mixing several unrelated requests into one message without structure.
• Using an overly emotional, defensive or confrontational tone.
• Leaving out reference numbers, dates or supporting details the recipient needs.
• Mentioning an enclosure or attachment but failing to include it.
• Using inconsistent names, titles, spelling or date formats.
• Ending without making the required next step clear.

Formatting and Presentation Checklist

• Use a readable business font and a consistent text size.
• Keep margins, paragraph spacing and alignment consistent.
• Check names, dates, addresses, amounts and reference numbers.
• Use UK spelling and clear UK date conventions for a UK audience.
• Keep paragraphs short enough to scan comfortably.
• Proofread grammar, punctuation and spelling.
• Confirm every attachment or enclosure mentioned is actually included.
• Read the letter once for meaning and once for detail before sending.

Developing Business Correspondence Skills

Business-letter writing is one part of wider administrative communication. If you want structured practice in correspondence, record keeping and office communication, our Personal Assistant Course and Personal Secretary Course both include business-letter writing within their current course content.

If you are comparing the wider responsibilities behind this kind of workplace communication, our guide to the job role of a secretary provides additional context on administrative communication, organisation and document-related duties.

These courses are free to study. Optional certification may be available for an additional fee after successful completion. Course-completion certificates, CPD accreditation, QLS endorsement and regulated qualifications are different forms of recognition and should not be treated as interchangeable unless the relevant status is explicitly confirmed.

Final Check Before You Send

Read the letter once from the recipient's point of view. They should be able to identify the purpose quickly, understand the relevant facts and know whether any action is expected. Then read it again purely for detail: names, dates, references, attachments and contact information. That two-stage check catches many of the mistakes that ordinary proofreading misses.