A

Arthur Cox

Full-service law firm: corporate, litigation, finance

Overview

Arthur Cox is a full-service law firm with offices in Dublin, Belfast, London, New York, and San Francisco. It offers a wide range of legal services for domestic and international clients, including corporate and M&A, litigation and dispute resolution, real estate, and debt finance. The firm operates by providing expert legal advice and acting as a one-stop shop for clients’ needs, typically charging fees for its services. Its international presence and long-standing expertise differentiate it from competitors, along with a strong emphasis on a sustainable business program that addresses environmental, workplace, community, and marketplace impacts. The firm’s goal is to help clients navigate complex legal challenges with trusted, high-quality advice while growing its business responsibly and sustainably.

Work here?Claim your company

About Arthur Cox

Simplify's Rating
Why Arthur Cox is rated
B-
Rated B on Competitive Edge
Rated B on Growth Potential
Rated C on Differentiation

Industries

Legal

Company Size

501-1,000

Company Stage

N/A

Total Funding

N/A

Headquarters

Dublin, Ireland

Founded

1920

Get referred to Arthur Cox

See people who can refer or advise you

Simplify Jobs

Simplify's take

What believers are saying

  • Legora rolled out firm-wide in July 2026, accelerating document-heavy work across practices.
  • Jennifer Ward became CTO on 19 March 2026, sharpening technology and AI execution.
  • Arthur Cox won London's leadership handoff on 1 September 2026, protecting international clients.

What critics are saying

  • Legora and similar AI tools commoditize routine drafting, compressing billable hours by 2027.
  • London depends on Amy McDermott and Christopher O'Reilly; any defection weakens international origination.
  • A sustained AI-led pricing shift destroys leverage, forcing a merger into a larger UK platform.

What makes Arthur Cox unique

  • Arthur Cox spans Dublin, Belfast, London, New York, and San Francisco, serving cross-border deals.
  • It leads Irish litigation, with a dedicated Legal Tech team for discovery efficiency.
  • Its first Irish Innovation Lawyer Group and 2026 CTO formalize AI-enabled legal delivery.

Help us improve and share your feedback! Did you find this helpful?

Benefits

  • Professional Development Budget

Company News

Arthur Cox
Oct 12th, 2026
Arthur cox shortlisted for Legal Adviser of the Year, EMEA at the Infra Global Investor Awards 2026.

Arthur cox shortlisted for Legal Adviser of the Year, EMEA at the Infra Global Investor Awards 2026. The winners will be announced at the Infra Global Investor Awards 2026 EMEA ceremony at The Savoy Hotel, London, on 26 November. 12/10/2026 Awards Arthur Cox has been shortlisted in the Legal Adviser of the Year, EMEA category at the Infra Global Investor Awards 2026. The Infra Global Investor Awards recognise excellence in fundraising, deployment and M&A activity across the energy and infrastructure sector. The awards are judged by an independent panel of industry professionals and recognise organisations that have demonstrated innovation, impact and success over the past year. Arthur Cox areshortlisted alongside leading international firms in the Legal Adviser of the Year, EMEA category, reflecting its continued involvement in some of the most significant transactions across Ireland, Europe and beyond.

Arthur Cox
Sep 1st, 2026
Arthur Cox LLP appoints Amy McDermott and Christopher O'Reilly to lead London office.

Arthur Cox LLP appoints Amy McDermott and Christopher O'Reilly to lead London office. 01/09/2026 Appointments Amy McDermott and Christopher O'Reilly have been appointed to lead its London office, effective from 1 September 2026. Amy and Christopher succeed Conor McCarthy, partner in its Corporate and M&A Group, who returns to Dublin after leading the London office since 2022. During his tenure, Conor played an important role in strengthening its presence in London and supporting clients across international markets. Amy is a partner in its Corporate and M&A Group and advises financial investors and public and private companies on the full spectrum of corporate transactions across a range of industries. Her practice encompasses complex domestic and cross-border M&A, corporate finance transactions, joint ventures, corporate reorganisations and a wide variety of corporate and commercial matters. Christopher is a partner in its Asset Management and Investment Funds Group. He advises investment managers, service providers and investors on all aspects of Irish fund law, regulation and governance. Christopher specialises in the establishment and operation of alternative investment funds, private capital structures, UCITS ETFs and other regulated businesses and funds. Commenting on the appointments, Geoff Moore, Managing Partner, said: "Its London office is an important part of its international business and plays a key role in supporting clients on complex international matters. Amy and Christopher are highly regarded lawyers whose expertise, strong client relationships and international experience make them ideally placed to lead the office's continued development. I would also like to thank Conor for his leadership of the London office. He has made a significant contribution to strengthening its presence in London and has developed many strong relationships across the market." John Matson, Head of International, commented: "Amy and Christopher's appointments mark an important next step in the evolution of our London office. Building on the strong foundations established by Conor, they will continue to strengthen the connections of and between our international offices and support our clients wherever they do business." With offices in Dublin, Belfast, London, New York and San Francisco, Arthur Cox support clients across international markets on complex cross-border matters.

Arthur Cox
Jul 24th, 2026
Arthur cox sponsoring FintechNation 26.

Arthur cox sponsoring FintechNation 26. Arthur Cox LLP is sponsoring FintechNation 26 on Tuesday 22 September at the Mansion House, Dublin. 24/07/2026 Events Hosted by Fintech and Payments Association of Ireland (FPAI), FintechNation 26 is a leading industry event bringing together fintech professionals from across Ireland for a programme of expert discussion, market insights and valuable networking opportunities. Under this year's theme, 'Small island, big ambition: Powering Ireland's fintech future', attendees will hear from industry experts, policymakers and innovators as they examine the trends, opportunities and challenges shaping the sector.

Arthur Cox
Jul 22nd, 2026
Dublin CLO & Private Credit Forum 2026.

Dublin CLO & Private Credit Forum 2026. Arthur Cox LLP is sponsoring the Dublin CLO & Private Credit Forum, taking place on Thursday 3 September. 22/07/2026 Events Hosted by Opal Group, the Dublin CLO & Private Credit Forum brings together senior leaders from across the European credit market for a day of insights, networking and discussion. The Forum will explore key developments shaping the CLO and private credit landscape, including investor allocation trends, private credit securitisation, European direct lending and the role of Ireland as a leading domicile for these structures. Brendan Kennedy, Partner in its Structured Finance and Securitisation Group, will speak on the panel "Structuring for Success: Legal, Tax & Regulatory Considerations Across CLOs and Private Credit".

Newsletter.co.uk
Jun 15th, 2026
'Important milestone in their careers': Northern Ireland law firm announces senior promotions across corporate, real estate and banking teams.

'Important milestone in their careers': Northern Ireland law firm announces senior promotions across corporate, real estate and banking teams. By Claire Cartmill Published 15th Jun 2026, 12:27 BST Lois Arbuthnot, Darren Fitzsimons, Hannah Jackson, Ross Carrigan and David Rogan take up new roles as Arthur Cox NI continues to invest in talent and marks 30 years in Northern Ireland Leading law firm Arthur Cox Northern Ireland has announced a series of senior promotions, reinforcing the firm's long-term growth strategy and continued commitment to investing in legal talent in the region. Lois Arbuthnot, Darren Fitzsimons and Hannah Jackson from the Corporate and M&A Group, alongside Ross Carrigan from the Real Estate Group, have been promoted to senior associate while David Rogan has been appointed Of Counsel in the firm's Banking and Finance Group. The appointments reflect Arthur Cox's ongoing investment in its people, ensuring the firm continues to provide expert legal advice and strategic counsel to clients across a broad range of sectors. You May Like Both Lois Arbuthnot and Hannah Jackson began their legal careers with Arthur Cox, having joined the firm as trainees in 2017. Their progression to Senior Associate underscores the firm's strong track record of nurturing and developing talent from within. Lynsey Mallon, managing partner at Arthur Cox Northern Ireland, said: "These promotions acknowledge Ross, Lois, Darren, Hannah and David's talent and ambition. "They have each made a significant contribution to the continued growth of our firm, and I am pleased to see them reach this important milestone in their careers. "At Arthur Cox, our people are one of our greatest strengths. We are committed to creating an environment in which talented lawyers can develop, progress and build long-term careers. "I would like to congratulate David, Lois, Darren, Hannah and Ross on this well-deserved recognition and wish them continued success in their new roles." This latest announcement comes as Arthur Cox marks 30 years in Northern Ireland. Since establishing its Belfast office in 1996, the firm has played a leading role in advising businesses, financial institutions, public sector organisations and investors on many of the region's most significant transactions and projects.

Recently Posted Jobs

Sign up to get curated job recommendations

Arthur Cox is Hiring for 10 Jobs on Simplify!

Find jobs on Simplify and start your career today

Don't see your dream role? Check out thousands of other roles on Simplify.Browse all jobs