This guide is about applying for jobs in the UK.

UK employers receive an average of 72 applications per role, according to SmartRecruiters' 2025 UK benchmark data[1]. In a stack that deep, a letter that starts with "I am writing to apply for the position of" sounds like the 50 before it.

Yet a written cover letter is the one document employers read with your CV that can argue, not just list. Learning how to write a cover letter properly is essentially one refusal: refusing to waste that opportunity. Everything that follows serves that refusal.

If the CV needs work first, start with our guide on how to write a CV for UK jobs. Come back for the letter once you finish that.

What Is a Cover Letter?

The foundation of knowing how to write a cover letter is understanding what the document is for. A cover letter is a one-page letter sent with your CV that argues why you fit this specific role. UK adverts use several names for the same document: covering letter, job application letter, employment application cover letter. The naming varies, the rules do not.

Here is the part worth acting on: the letter is most likely read when a recruiter cannot choose between two similar CVs. That is exactly when you want a strong argument ready.

Will anyone read it the rest of the time? Honestly, sometimes no. A recruiter's first look at an application takes seconds, not minutes.

Greenhouse data shows there were about 222 applicants for each job opening in Q1 2024[2]. At that volume, plenty of letters go unopened. So write it for the skim: short paragraphs, with the role named early and the strongest evidence visible without scrolling.

How to Write a Cover Letter

Knowing how to write a cover letter means answering four questions, one paragraph at a time. Open the job posting before you write anything. The marking scheme covers everything that follows.

Four steps take you from blank page to sign-off:

Step 1: who you are and what you are applying for.
Step 2: why you chose this employer.
Step 3: your evidence against the job requirements.
Step 4: the close and the sign-off.

Step 1: How to Start a Cover Letter

Address a named person whenever you can find one. Check the job posting, the company website, or the team's social media profiles. A real name beats "Dear Hiring Manager". Both beat "Dear Sir or Madam", which dates the letter at once.

Then comes the first line, and this is where most letters die. "I am writing to apply for the role of Marketing Assistant" tells the reader nothing they did not know from the subject line. Your opening should show your enthusiasm for the role, not mere eagerness to apply. Spend it on substance instead, using one of these patterns.

Curious to see some examples?

Achievement First

"I spent the last two years reducing onboarding time for new retail staff by a third. That is why the Operations Coordinator role caught my attention."

Role Fit First

"The Junior Data Analyst role asks for SQL, stakeholder reporting and curiosity. I can evidence all three."

Referral First

"Your team lead suggested I apply after we met at the Manchester product meetup in May." Only when true.

Whatever pattern you choose, name the exact role title from the advert. It signals your genuine interest in the role, not a mass application. When Jobscan asked 384 recruiters in 2025 how they screen applications, 55% said they filter by job title first[3]. So, an opening line with the wrong role can cost you a read.

Step 2: Why You Chose This Employer

Explain why this employer fits you. Take a few minutes to research the company before you write this paragraph. Name one specific link to your experience. Mention a product they ship or a market they are entering.

Generic admiration ("a leading company in its field") proves you did no research. Potential employers see that sentence in most letters they receive. One specific, real observation does more than three sentences of flattery.

Step 3: Your Evidence Paragraph

This is the longest paragraph in the letter and the one the reader came for. Most advice on how to write a cover letter goes vague exactly here. Treat it as an evidence exercise instead: the advert is the marking scheme.

Read it twice and pick the two or three job requirements where your proof is strongest. Highlighting your skills here matters most.

Answer each requirement with a specific example drawn from your skills and experience. Use a number or a result someone can check. If possible, link it to a named tool.

Mirror the advert's own wording for skills. If the advert asks for communication skills, use that exact phrase. Write "working with people" and the recruiter scanning for the term will miss you. Their software may miss you too.

The same logic applies to your CV. Our guide on how an ATS reads your CV explains what happens before a person sees it.

Specificity is your edge. Recruiter interviews conducted by Enhancv in 2025 found entry-level roles routinely receiving 400 to 600 applications[4].

A cover letter with real evidence against the job requirements is rarer in that pile than you think. Most draw on vague work experience. Yours does not have to.

The evidence must be true, though. The letter argues, it never invents. A claim you cannot back up in the interview will cost you the offer.

Step 4: How to End a Cover Letter

The closing paragraph should take three sentences at most. Restate your fit in one line. State your availability plainly.

Include a clear call to action: ask for the conversation without begging for it. Three closing lines, each taking a different angle:

Want to see strong closings too?

Fit First

"I would welcome the chance to discuss how my warehouse scheduling experience applies to your peak-season planning."

Availability First

"I am available for interview from 15 July and happy to complete any assessment beforehand."

The Direct Ask

"I would value twenty minutes to talk through what I could contribute to the team."

Then the sign-off, where British convention is strict and simple.

Use "Yours sincerely" when you address a named person.
Use "Yours faithfully" when you open with "Dear Hiring Manager" or similar.
Use "Kind regards" when the letter is in the email body itself, not sent as an attachment.

Sign with your full name. Add your contact details beneath, phone number and email, even though they are on the CV. Make the reader's next step effortless.

Why Your Cover Letter Stands Out

A correct letter is not yet a convincing one. Knowing how to write a cover letter well means going beyond the right structure.

Four things make some letters worth rereading. Use the right format. Keep your CV consistent. Use AI carefully and with discipline. Know what to avoid.

Cover Letter Length and Format

How long should a cover letter be? One page, always.

Aim for 250 to 400 words across three to five paragraphs. That is short enough that a time-pressed recruiter will finish it. If your draft is too long, cut the weakest evidence instead of shrinking the font. When writing your cover letter, choosing what to leave out is half the work.

Attention to detail in your formatting signals how you work. Get these basics right:

Same font as your CV, so the two documents read as one application.
PDF, unless the advert asks for something else.
File name with your own name in it, followed by the words cover letter, since "document(3).pdf" helps nobody.
No photo, no date of birth for UK applications.
No tables, columns or graphics. Plain text survives automated parsing. Fancy formatting often breaks it, and a letter the software cannot read may not exist.

One practical fork: when the advert asks you to apply by email, the cover letter becomes the email itself. Same structure, no address block, role title in the subject line.

Pair the Letter With a CV Worth Opening

The letter's only job is to get your CV read properly. That makes the two documents match a must, because a recruiter who sees a conflict stops trusting either.

Before you send, check:

Same role target. The letter and CV aim at the same job title, with the same headline skills.
Same terms. A skill the letter names appears in the CV in the same wording.
No contradictions. Dates, titles and employers match exactly.
Letter highlights, CV proves. Every claim in the letter has a line in the CV behind it.

This matters because every serious application means tailoring twice, once for the letter and once for the CV. The two must still agree when you finish. That doubled, fiddly work is where most people reach for a template and lose the match.

A tool that tailors your CV and cover letter for each role keeps them aligned. They support the same application, so you do not need to reconcile them by hand. Knowing how to write the letter still matters, because you decide what it says. The tool makes saying it, in step with your CV, fast.

Writing a Cover Letter With AI (Without Sounding Like Everyone Else)

Plenty of your competition is already drafting with AI. When Canva and Sago Research surveyed 10,000 job seekers in January 2025, 45% said they use AI tools in their applications[5]. The consequence is predictable: an unedited AI letter now reads like everyone else's unedited AI letter.

Used carefully, the tools still earn their place. A short checklist keeps the letter yours:

Feed it the actual advert, never the generic prompt "write me a cover letter". The output is only as specific as the input.
Keep your own specifics. The numbers, project names and outcomes must come from your history, because the model will happily invent plausible ones.
Rewrite the opening in your own words. First lines are where AI drafts sound most alike.
Fact-check every claim it makes about you. The interviewer will ask you about each one in the interview.

A second reason a genuinely tailored letter pays off is that it meets your specific needs. Greenhouse's 2024 survey of 2,500 workers found 38% of job seekers admitting they mass apply[6]. Every mass application in the pile makes a specific, evidenced letter stand out further.

Common Mistakes to Avoid

These errors cost candidates the read most often.

Opening with "I am writing to apply for." This wastes the most-read line in the letter. Use an achievement, a role match, or a referral reference instead.
Repeating your CV. The letter argues; the CV lists. Do not summarise your work history. Explain why it matters for this specific role.
Generic employer admiration. "I have always admired your company" tells the recruiter nothing. Name one specific product, market entry, or initiative instead.
Wrong or missing role title. 55% of recruiters filter by job title first[3]. Name the exact role from the job posting.
Going over one page. Readers almost never read a second page. Cut evidence, not formatting.
Sending the same written cover letter to every potential employer. A letter built from one specific job posting stands out. A template does not.
Mixing up the sign-off. "Yours sincerely" and "Yours faithfully" are not interchangeable. The rule is in Step 4 above.

Frequently Asked Questions

What is a cover letter?

A cover letter is a one-page letter sent alongside your CV that argues why you fit one specific role. UK job adverts also call it a covering letter. Others say job application letter or employment application cover letter.

The names differ, but the document is the same. It complements the CV by explaining why your experience matters for this role.

The CV lists; this letter argues. Once you understand this distinction, you know how to write a cover letter that works.

How do you start a cover letter?

Address a named contact where you can find one, falling back to "Dear Hiring Manager" otherwise. Name the exact role title from the advert in your first line. Add one clear reason you fit, like a relevant achievement or a direct match to requirements. Never open with "I am writing to apply for", which wastes the most-read line in the letter.

How do you end a cover letter?

Close by restating your fit and your availability in two plain sentences, then ask directly for a conversation. After that, apply the British sign-off rule.

Use "Yours sincerely" when you address a named person. Use "Yours faithfully" when you do not. Use "Kind regards" when the letter is in the email body. Add your phone number and email under your name.

How do you write a cover letter for a job application?

The short answer to how to write a cover letter for a job application: use four paragraphs in a fixed order. Cover who you are and the role you are applying for. Explain why you want to work for this employer.

Give evidence for two or three key requirements in the advert. End with a short closing and a UK-style sign-off. Keep it to one page and mirror the advert's wording.

I cannot find the hiring manager's name. What should I put?

Try the job posting, the company website, LinkedIn, and the team's social media profiles. If nothing surfaces, "Dear Hiring Manager" is the correct fallback. Both are better than "Dear Sir or Madam", which dates the letter immediately.

How do I stop my cover letter sounding like AI wrote it?

Rewrite the first sentence in your own words. Then add one specific detail only you would know: a number, a project name, a named tool. The opening is where unedited AI letters sound most alike.

Feed any AI tool the actual job posting, not a generic prompt. Fact-check every claim it makes about you.

How long should a cover letter be?

One page at most. Aim for 250 to 400 words across three to five paragraphs, a length a time-pressed recruiter will realistically finish.

Short and specific beats long and generic. If your letter is over one page, cut the weakest example. Do not shrink the margins.

Conclusion: Write the Letter the Skim Deserves

Employers and hiring managers set most cover letter rules before you type a word. Use four paragraphs in a fixed order.

Use the advert's wording as proof. Keep it to one page. Hold to that and your letter beats the template majority.

The letter earns the interview. The interview is its own craft; our guide to interview questions and answers takes over from there.