Competition Law Career Guide
Competition law (also called antitrust law in some jurisdictions) governs how businesses must behave in markets to preserve competition and protect consumers. In the UK this work sits at the intersection of law, economics and business strategy: lawyers advise on mergers, cartel and abuse investigations, competition compliance, regulatory strategy and litigation. This guide explains what competition lawyers do, the career pathways into the area, the skills you need, and practical steps you can take now to break in and progress to partner or in-house senior counsel roles.
What competition law practice involves
Competition law covers several distinct but related topics. Practitioners generally focus on one or more of the following areas:
-
Merger control: Advising on whether transactions require notification to regulators (the UK Competition and Markets Authority, CMA) and preparing merger filings, remedies and market-share analysis.
-
Cartel investigations: Representing clients in dawn raids, leniency applications, and both public and private cartel investigations. Work often involves urgent evidence preservation and negotiating settlements.
-
Abuse of dominance and sector-specific regulation: Advising dominant firms on pricing, rebates, exclusivity agreements and regulatory interactions in sectors such as telecoms, energy and digital markets.
-
Competition litigation and damages claims: Running follow-on damages claims, representing clients in judicial review of regulator decisions, and bringing or defending competition-related private enforcement claims.
-
Compliance and risk management: Designing competition compliance programmes, conducting internal audits, training staff and advising on commercial contracts to reduce legal risk.
Work is multidisciplinary. Lawyers routinely work with economists, data scientists and commercial teams to analyse market definition, competitive effects and remedies. High-profile merger cases and cartel investigations can move quickly and demand rapid fact-finding, drafting and negotiation under pressure.
Typical day-to-day work and examples
A competition lawyer's day varies by role and employer, but common tasks include drafting legal submissions, preparing economists' instructions, attending client strategy meetings and liaising with regulators.
-
Example 1: Merger filing. You will compile factual evidence, draft the legal submissions for a CMA or EU filing, coordinate with in-house teams, and work with economists to run market-share and diversion analyses. Expect tight deadlines and detailed Q&A from regulators.
-
Example 2: Cartel response. Following a dawn raid, you will advise on privilege, collect and preserve documents, prepare witness statements and negotiate with regulators if leniency is being considered.
-
Example 3: Compliance project. You may design bespoke training for commercial staff, produce draft clauses for supply agreements and create monitoring processes such as transaction screening flows.
-
Example 4: Litigation. Prepare pleadings, work on disclosure exercises, instruct barristers and economists, and prepare witness bundles for trial or settlement discussions.
In-house roles often emphasise proactive compliance and commercial advice; private practice roles combine reactive regulatory work with transactional and litigation elements. Working for a regulator or economics firm will be more policy- and data-focused.
Career paths and progression
There are several common routes and endpoints for competition lawyers:
-
Private practice at a full-service City firm. Work includes large merger filings, cartel defence and high-value litigation. Progression moves from junior associate to senior associate, then partner. Specialisation and a strong record on high-profile mandates accelerate progression.
-
Boutique competition firms. These offer highly technical work and early client-facing opportunities. Boutiques can be faster routes to partner but may involve a narrower range of work.
-
In-house counsel. Many competition lawyers move in-house to lead compliance, handle transactional clearances and manage regulatory relations. In-house roles suit those who prefer sustained commercial engagement.
-
Regulator and policy roles. The CMA, Ofcom and sector regulators hire lawyers for enforcement and policy teams. These roles provide excellent exposure to enforcement priorities and policy development and are valuable CV experience.
-
Economic consultancies and expert witness work. Firms such as Oxera, Compass Lexecon and NERA hire lawyers with strong economics skills; you can transition into expert witness or economist-led litigation advisory.
-
Academia and non-governmental organisations. Those interested in policy or teaching may pursue academic or think-tank roles focusing on competition law and economics.
Career decisions should weigh the kind of work you enjoy (litigation vs advisory vs policy), lifestyle preferences and whether you want client development responsibilities.
Skills and competencies employers look for
Competition law values a blend of legal, commercial and quantitative skills. Develop the following:
-
Legal analysis and drafting. Ability to draft clear submissions, pleadings, settlement agreements and compliance policies is essential.
-
Economic literacy. Comfort with market definition, price theory, market-share calculation and basic econometrics. You do not need to be an economist, but knowing how to read a report and explain its legal implications is crucial.
-
Data handling and tech. Familiarity with Excel, data visualisation and an understanding of statistical packages (Stata, R) is attractive. Knowledge of e-disclosure platforms and document review processes is helpful.
-
Communication and client management. Clients expect concise commercial advice, the ability to explain complex economic evidence, and strong negotiation skills.
-
Project management and attention to detail. Merger filings and investigations have strict timetables; managing multiple stakeholders and meeting deadlines is non-negotiable.
-
Commercial awareness. Understand how legal advice affects business strategy and be able to discuss the commercial risks and options.
Practical ways to build these skills include taking economics modules, completing data-analysis short courses, participating in mooting or negotiation competitions, and doing paralegal work in competition teams.
How to break into competition law - practical steps
Competition law is competitive but accessible with a deliberate plan. Follow these actionable steps:
-
Build a targeted CV and applications.
-
Gain relevant experience through paralegal roles in competition teams, internships at the CMA or economic consultancies, or work on competition-related matters at firms. Quantify achievements and describe the tools you used.
-
Tailor applications to show economic literacy: mention coursework, dissertation topics, or projects that involved market analysis.
-
Study the right topics and qualifications.
-
Take modules in EU/UK competition law, contract law and economics where possible. If on the SQE route, supplement with electives or online microcourses in competition law and economics.
-
Consider short courses in econometrics or data analysis (eg Coursera, LSE Department of Continuing Education).
-
Produce visible evidence of interest and expertise.
-
Write articles or blog posts on recent CMA decisions or merger cases and publish them on LinkedIn or law-student platforms. This demonstrates engagement and technical understanding.
-
Present at university societies or participate in competitions focused on regulatory or commercial law.
-
Network strategically.
-
Contact alumni, attend CMA public events and industry conferences, and use platforms like LinkedIn intelligently. Target people working in teams you want to join and ask for short informational conversations.
-
Use resources such as YourLegalLadder, Legal Cheek, Chambers Student and LawCareers.Net for vacancy tracking, firm profiles and market intelligence.
-
Prepare for interviews and assessments.
-
Practice case studies on merger assessment, draft short written advice and be ready to explain economic concepts simply. Use past CMA decisions to form examples.
-
Be ready to discuss commercial outcomes and client-focused solutions rather than purely doctrinal answers.
-
Consider secondments and short placements.
-
Seek secondments to in-house legal teams or the CMA from your training contract, and apply for internships at economic consultancies. These experiences are highly prized by employers.
Persistence and targeted experience are the most reliable paths into this field.
Resources, continued learning and next steps
Keep learning and stay current - competition law changes with policy and case law. Useful resources include:
-
Regulator websites and decisions. The CMA website and GOV.UK publish decisions, guidance and consultation papers which are primary materials to follow.
-
Trade and academic journals. Concurrences, the European Competition Journal and Competition Law Review provide in-depth analysis of trends and cases.
-
Practical platforms and job boards. Use YourLegalLadder alongside Legal Cheek, Chambers Student and LawCareers.Net for market intelligence, application deadlines, and mentorship options.
-
Economic and data training. Short courses from the LSE, Coursera or local continuing education providers on econometrics and data analysis strengthen your profile.
-
Legal research tools. Practical Law, LexisNexis and Westlaw are standard in firms; familiarity is advantageous.
Next steps: create a 6-12 month plan with specific targets (eg complete an econometrics short course, secure a paralegal role in a competition team, publish one article on a CMA decision). Track applications and deadlines - tools on platforms such as YourLegalLadder can help manage this process. With a mix of technical competence, commercial awareness and targeted experience, you can build a successful competition law career.
Frequently Asked Questions
How can I break into competition law as a trainee solicitor in the UK?
Target firms with established competition/antitrust teams and tailor applications to show commercial awareness and evidence of economic reasoning. Use YourLegalLadder's training contract tracker to manage deadlines and compare firm profiles. Seek vacation schemes, paralegal roles or secondments to in‑house competition teams or the CMA; practical experience of merger filings, cartel investigations or compliance projects stands out. Build relationships with academics or practising solicitors for informal work experience and mentoring. Read recent CMA decisions and know a couple of market stories to discuss in interviews - quality of insight beats breadth.
Do I need an economics background to practice competition law, and how can I build the right technical skills?
An economics background helps but isn't mandatory. Key is being comfortable with microeconomics concepts (market definition, market power, SSNIP tests) and basic quantitative work. Learn Excel, and basics of Stata or R for simple data tasks. Take short courses or MOOCs on competition economics, follow CMA guidance and the European Commission's materials, and read practitioner texts. Develop legal drafting, advocacy and client‑management skills through moots, pro bono or commercial projects. Use YourLegalLadder's SQE and question‑bank resources alongside academic courses to bridge legal and economic knowledge.
How should I prepare for competition law interview case studies and assessment centres?
Practice structured problem solving on merger and cartel hypotheticals: define the market, set out theories of harm, identify evidence and remedies. Expect short written exercises, group tasks and numerical tests; practise timing and clear summaries. Use mock interviews and case simulations with mentors - platforms like YourLegalLadder offer 1‑on‑1 mentoring and CV/TC review. Read recent CMA and CAT decisions so you can reference current trends. During assessment centres, demonstrate commercial judgement, teamwork and concise communication; back arguments with logical economic reasoning rather than legalese alone.
What does progression look like in a competition law career and what practical steps help you move up?
Progression typically moves from junior associate handling fact‑finding, drafting filings and submissions, and supporting investigations, to leading complex merger reviews, litigating in the Competition Appeal Tribunal and advising senior clients. Secondments to in‑house teams or the CMA, and collaborating with economists, speed promotion. Publish short articles, develop a sector specialism (tech, pharma, energy) and gain advocacy experience. Keep up with market intelligence - YourLegalLadder's firm profiles and weekly commercial awareness updates are useful - and seek stretch assignments that show strategic judgement and client ownership.
Explore UK firms with top competition teams
Compare UK firms' competition teams, merger and cartel experience plus training-contract insights to target your applications.
Browse firms