Resume Mistakes to Avoid: Our Essential Career Advice
Picture this: a candidate with eight years of experience, a track record of hitting targets, and qualifications that match the job spec perfectly. They apply for a role at a Manchester tech firm and hear nothing back. Not even a rejection email. We have seen this scenario play out more times than we can count, and in almost every case, the culprit is not the candidate’s ability — it is their resume. A CV that fails to make it past the first screening can undo months of careful job hunting, which is why we want to walk you through the mistakes we see most often and how to fix them.
Why Your Resume Might Be Holding You Back
Here is the uncomfortable truth: most recruiters are not reading your CV in any meaningful sense. They are scanning it. Research consistently shows that the average recruiter spends around six to seven seconds on an initial review before deciding whether to keep reading. That is barely enough time to register your job titles and the companies you have worked for, let alone absorb the nuances of your career story.
Worse still, a human may never see your CV at all. Around 75% of resumes are rejected by Applicant Tracking Systems (ATS) before human review. These systems parse your document, extract keywords, and score it against the job description. If your formatting confuses the software or your content lacks the right terms, you are filtered out automatically — often without any notification.
The Six-Second Scan: What Recruiters Look For
When a recruiter opens your CV, their eyes typically travel in a predictable pattern: current job title, current employer, dates of employment, then previous roles. They are checking for relevance, progression, and gaps. If your most recent role is buried under a wall of text or your job titles are unclear, you have already lost their attention. Clear job titles, a logical reverse-chronological order, and prominent dates give them the anchors they need.
How ATS Software Filters Your CV
Applicant Tracking Systems are used by the majority of medium and large UK employers, including major graduate schemes and public sector bodies. The software looks for exact matches between your CV and the job advert — skills, qualifications, job titles, and industry terminology. It also checks that your document is machine-readable. Fancy layouts, text boxes, and headers can all cause parsing errors, meaning your carefully worded experience may never be registered at all.
Formatting Mistakes That Hurt Your Chances
We have reviewed thousands of CVs, and formatting problems are among the easiest mistakes to fix — yet they are also among the most damaging. A beautifully designed CV means nothing if the software cannot read it or the recruiter cannot find what they need in seconds.
Using Tables and Graphics That ATS Can’t Read
Tables, columns, icons, and infographics may look impressive on screen, but many ATS platforms cannot parse them correctly. Text inside a table cell might be read out of order, duplicated, or skipped entirely. The same applies to text embedded in images, skill rating bars, and charts. Our advice is simple: keep your layout linear and text-based. Use standard bullet points, plain headings, and a single-column structure wherever possible.
Ignoring UK CV Conventions
UK employers typically expect a two-page CV. Going beyond that is acceptable only for senior academic or medical roles. A three or four-page document suggests you cannot prioritise information, and busy hiring managers may not read past page two. Beyond length, UK conventions include:
- A clear personal statement or professional summary at the top
- Reverse-chronological work history with month and year dates
- Standard section headings such as “Work Experience”, “Education”, and “Skills”
- A professional email address and a UK phone number format
- No references listed on the CV itself — these are provided on request
Sticking to these norms signals that you understand the market you are applying within, which matters more than most candidates realise.
Content Errors That Undermine Your Credibility
Even a perfectly formatted CV can fall flat if the content does not do its job. We often see candidates undersell themselves through vague language or, worse, damage their credibility with careless errors.
Typos and Grammatical Errors
This one is non-negotiable. Around 77% of recruiters reject resumes with typos. In a competitive market, a single spelling mistake can be the difference between an interview and silence. Recruiters interpret typos as a lack of attention to detail — a trait that matters in almost every professional role. Read your CV aloud, run it through a spell-checker, and ask someone else to proofread it. Do not rely on autocorrect alone.
Vague Job Descriptions vs. Quantified Achievements
Phrases like “responsible for managing a team” or “helped with marketing projects” tell a recruiter almost nothing. UK employers value specific, measurable outcomes. Compare these two examples:
- Vague: Responsible for improving customer satisfaction.
- Quantified: Increased customer satisfaction scores from 72% to 89% over 12 months by redesigning the onboarding process.
The second version gives the reader a number, a timeframe, and a method. Wherever possible, include figures: revenue generated, costs saved, percentage improvements, team sizes, or project budgets. Numbers make your impact concrete and memorable.
Tailoring Your Resume: The Key to Standing Out
One of the most common mistakes we see is the one-size-fits-all CV. Candidates write a single document, then send it to twenty different roles and wonder why they hear nothing back. In a market where ATS software is doing the first round of screening, generic applications rarely survive.
Mirroring Keywords from Job Descriptions
Before you apply, read the job description carefully and identify the recurring skills, qualifications, and phrases. If the advert asks for “stakeholder management” and “data-driven decision making”, those exact terms should appear in your CV where they genuinely reflect your experience. This is not about gaming the system — it is about making it easy for both the software and the human reader to see that you match the requirements. Companies like the BBC and Deloitte use ATS to screen candidates, so mirroring the language of the advert is a practical necessity, not a trick.
Avoiding One-Size-Fits-All Resumes
Tailoring does not mean rewriting your entire CV for every application. It means adjusting your personal statement, reordering your bullet points, and emphasising the projects most relevant to the role. Keep a master CV with everything in it, then create a tailored version for each application. It takes twenty minutes and dramatically improves your hit rate.
Personal Details: What to Include and What to Leave Out
UK CV conventions around personal information differ from those in many other countries, and getting this wrong can create an awkward impression — or even raise legal concerns for the employer.
Contact Information Essentials
Your CV should include your full name, a professional email address, a contact phone number, and your location (city or region is sufficient). If you have a LinkedIn profile or a portfolio relevant to the role, include the link. Make sure your email address is something you are happy for a hiring manager to see — firstname.lastname@ is far better than a nickname from your university days.
What Not to Include (Photos, Age, Marital Status)
In the UK, you should leave photos, date of birth, marital status, and nationality off your CV unless the role specifically requires it. ACAS guidelines discourage including photos on UK CVs because they can introduce bias into the recruitment process and create equality law risks for employers. The same logic applies to age and marital status. Including these details may mark you out as unfamiliar with UK hiring norms, which is the last impression you want to give.
Conclusion
Avoiding these common mistakes — poor formatting, careless typos, vague achievements, and generic applications — can transform your job search results. Tailoring your CV to each role, keeping it to the two-page UK standard, and ensuring it is readable by ATS software gives you a genuine advantage over the majority of applicants. We recommend reviewing your CV every few months, even when you are not actively job hunting, so it stays current and ready when opportunity appears.
FAQ
How long should a CV be in the UK?
UK employers typically expect a two-page CV. For most professional roles, two pages is the sweet spot — enough space to demonstrate your experience without overwhelming the reader. Only academic, medical, or senior executive roles commonly justify a longer document.
Do I really need to tailor my CV for every job application?
Yes, wherever possible. With 75% of resumes rejected by ATS before human review, a generic CV is far more likely to be filtered out. Mirroring keywords from the job description and emphasising your most relevant experience takes little time and significantly improves your chances.
Should I include a photo on my UK CV?
No. ACAS guidelines discourage including photos on UK CVs, as they can introduce bias and create equality law risks for employers. Leaving your photo off is standard practice and shows you understand UK recruitment norms.
How can I check if my CV will pass ATS screening?
Use a simple, single-column layout with standard headings and no tables or text boxes. Save your CV as a .docx or PDF unless the advert specifies otherwise, and check that job titles and key skills appear as plain text. Many free online tools can also scan your CV against a job description for keyword matches.
What is the most common resume mistake you see?
Without question, it is vague, unquantified content. Statements like “responsible for sales” tell a recruiter nothing. Adding specific metrics — percentages, revenue figures, team sizes — instantly makes your CV more credible and memorable.
