What a UK cover letter is actually for
Most weak cover letters fail for the same reason: they restate the CV in longer sentences. The reader has already seen your job titles and dates. What they cannot see from a CV is why a particular experience matters, what you decided in a difficult moment, or how your background maps onto the specific role in front of them. That is the job of the cover letter.
Think of the CV as the record of what you did, and the cover letter as the short argument for why it is relevant here. A CV bullet might read "reduced support ticket backlog by 40%". A cover letter can explain the situation behind that number — the backlog you inherited, the change you made, and why that experience is directly relevant to the role you are now applying for. The letter adds context; it does not duplicate.
This matters because a cover letter is one of the few places you can speak directly to a specific employer about a specific role. Used well, it connects your evidence to their requirements. Used badly, it becomes a generic paragraph of enthusiasm that could have been sent to any company — and readers spot that immediately.
The basic structure
A UK cover letter usually has three parts, and none of them needs to be long:
- The opening — name the role you are applying for and give one genuine, specific reason you are interested. Not "I have always admired your company", but something concrete: a product you have used, a piece of work the team published, a problem in the sector you want to work on.
- Two or three evidence paragraphs — each one tied to a specific requirement from the job description. This is the core of the letter and where most of your words should go.
- The closing — a short, straightforward sign-off. Confirm your interest, note your availability if relevant, and thank the reader. There is no need for elaborate flourishes.
The middle section carries the weight. The opening and closing should be brief. If you find yourself writing a long introduction before you have made a single evidenced point, cut it back.
Before you write, read the job description properly. You cannot tie your evidence to requirements you have not identified. Pull out the three or four requirements that matter most, then write a paragraph for each. Our guide on how to read a UK job description walks through separating genuine essentials from wish-list extras.
The evidence-first paragraph method
The most reliable way to write a body paragraph is to build it around a single requirement and a single real example. This is the same discipline used for writing strong CV bullet points, applied to prose. Each paragraph follows three steps:
- State the requirement you are addressing. Open the paragraph by naming the thing the employer asked for — "The role calls for someone who can manage competing priorities across teams." This shows the reader you are responding to their advert, not sending a template.
- Give one specific, real example. Describe an actual situation from your experience that demonstrates it. Keep it concrete: what the situation was, what you did, and any detail that makes it real. One well-told example beats three vague assertions.
- State the outcome or what it demonstrates. Close the loop. What was the result, and what does it show about how you would perform in this role? This is where you connect your past evidence to their future need.
Applied consistently, this method keeps every paragraph honest and specific. If you cannot complete step two with a real example, that is a signal the claim does not belong in the letter. The same evidence-first principle sits behind good CV writing — our guide on writing CV bullet points with real evidence covers it in more depth, and the two documents should tell a consistent story.
Common mistakes to avoid
Most cover-letter problems fall into a handful of recurring patterns. Knowing them makes them easy to catch on a final read-through.
- Generic template language. Sentences that could apply to any employer — "I am a passionate, hard-working team player seeking a new challenge" — tell the reader nothing. If a paragraph would work unchanged for a completely different job, it is not doing its job.
- Restating the CV verbatim. If a paragraph simply narrates your last role in the order it appears on your CV, cut it. Add context the CV cannot, or remove it.
- Enthusiasm without specifics. Claiming you are "extremely excited" about a company is easy to write and easy to ignore. A single specific reason — something the team actually did — carries far more weight than any adjective.
- The wrong company name. Reusing a previous letter and forgetting to change the employer's name, or addressing it to the wrong hiring manager, is one of the fastest ways to have an application dismissed. Always read the final version cold before sending.
Make sure your CV evidence holds up first. A cover letter is only as strong as the evidence behind it, and the same claims usually appear on your CV. Wallbreak's Analyse CV feature reviews your CV for evidence gaps — the vague or unsupported claims worth firming up before you write about them anywhere. The evidence-first approach it encourages applies just as well to a cover letter.
When a cover letter is — and isn't — expected
It is worth being honest about how much a cover letter counts, because it varies. In UK hiring, many applications now run through an applicant tracking system where the cover letter is an optional field. Some hiring managers read every word; others skim it or skip straight to the CV. The weight it carries depends on the employer, the sector, and the seniority of the role.
As a rough guide, a cover letter tends to matter more for roles where communication and judgement are central, for smaller organisations where a person reads each application, and for career changes where you need to explain a move the CV cannot. It tends to matter less for high-volume roles filtered largely on structured criteria, or where the form does not request one at all.
The practical takeaway: do not treat the cover letter as universally decisive, but do not dismiss it either. Where one is requested or clearly valued, a short, specific, well-evidenced letter is worth the effort. Where it is optional and you have little to add beyond the CV, a weak generic letter is worse than none. And in every case, the strongest letters share the same foundation as a strong CV — the ability to tailor your evidence to the job description honestly.
Frequently asked questions
How long should a UK cover letter be?
Aim for half a page to one full A4 page — roughly three to four short paragraphs. If a cover letter runs onto a second page, it is usually repeating the CV rather than adding new context. Recruiters read many applications, so a focused letter that makes two or three well-evidenced points lands better than a long one that lists everything.
Do I still need a cover letter if the application form doesn't ask for one?
It depends on the employer and role. Many applicant tracking systems mark the cover letter as optional, and some hiring managers barely read it. Where the field is optional, a short, specific letter can still add useful context that your CV cannot show — but a generic template adds little and can even count against you. Judge it case by case rather than assuming it is always essential.
Should a cover letter repeat what's already on my CV?
No. The cover letter should add context the CV cannot show — why you are applying, how a specific experience maps to a requirement, or a decision behind a result. Restating your CV in prose wastes the reader's time. Use each paragraph to explain something the bullet points can only hint at.
How do I write a cover letter with real evidence rather than generic enthusiasm?
For each point, name the requirement you are addressing, give one specific real example from your experience, then state the outcome or what it demonstrates. This mirrors the evidence-first approach used for CV bullet points: claims are only convincing when a concrete example sits behind them. Avoid adjectives like "passionate" or "hard-working" unless an example immediately proves them.
Who should I address a UK cover letter to?
Use a named person where the advert or company site makes one clear — "Dear Ms Okafor". If no name is available, "Dear Hiring Manager" is a safe, professional choice. Avoid "To whom it may concern", which reads as dated, and always double-check you have not left a previous employer's name in a reused template.