Mr Manus McMullan KC > Atkin Chambers > London, England > Lawyer Profile

Atkin Chambers
1, Atkin Building, Gray's Inn


Manus specialises in commercial disputes with an emphasis on energy, natural resources and utilities, construction and engineering, professional indemnity and insurance matters both domestically and internationally. He is often the lead advocate on the largest and most high-profile disputes in these fields. He has represented a wide range of clients including multi-national corporations, government entities, professional advisers, contractors and individuals all over the world.

In the past three years, in cases where Manus has been acting for the Claimant or Plaintiff, his clients have been awarded, and have recovered, over US$ 1bn.  In the same time frame, where he has been acting for Defendants or Respondents, he has successfully defended claims for in excess of US$ 5bn.


Called 1994; Middle Temple; QC 2010.


Manus is fluent in Spanish and has competent professional proficiency in French.



He is a member of the disciplinary board of the RIBA and a trustee of the Harold G Fox Scholarship.


Oxford University (Hons Jurisprudence 1st).

Lawyer Rankings

London Bar > Construction

(Leading Silks)Ranked: Tier 1

Manus McMullan KCAtkin Chambers ‘Manus is a superior advocate. He has excellent judgment and a first-rate legal mind, his cross-examinations are incisive and powerful, and his oral arguments are crisp, persuasive and go straight to the heart of the matter.’

Atkin Chambers has a sterling reputation as a specialist set for construction disputes, covering a range of work in the UK and abroad. In domestic courts, Dominique Rawley KC and Jennifer Jones are instructed to act for the defendants Balfour Beatty Kilpatrick and Balfour Beatty Group on Northumbria Healthcare NHS v Lendlease, a matter concerning a hospital built in 2015 alleged to have wide-ranging structural defects to the extent a temporary replacement needed to be built. Meanwhile, Simon Lofthouse KC and Omar Eljadi are acting for MPB Structures in defence of defects claims in a related case, Lendlease Construction v MPB Structures, regarding flooring and drainage work at the same hospital. Chantal-Aimée Doerries KC is acting for Morrisons supermarkets in a large multi-party dispute regarding the extension of an abattoir. Stephanie Barwise KC continues to act on behalf of the largest group of bereaved, survivors and residents in the Grenfell Tower Public Inquiry. In addition, members of the set have seen increased instructions on fire safety defect cases and PFI-related disputes. International highlights include Manus McMullan KC and Christopher Lewis KC continuing to act for the Panama Canal Authority in a series of high-value claims arising from the Third Set of Locks Project, one of the largest engineering projects in the world at the time. Stuart Catchpole KC has joined from 39 Essex Chambers, and Rupert Choat KC took silk in March 2022. Nicholas Baatz and Sebastian Pigott retired in February 2022 and May 2022 respectively.

London Bar > Energy

(Leading Silks)Ranked: Tier 3

Manus McMullan KCAtkin Chambers ‘A superior advocate with excellent judgment and a first-rate legal mind, his cross-examinations are incisive and powerful.’

London Bar > Professional negligence

(Leading Silks)Ranked: Tier 3

Manus McMullan KCAtkin ChambersManus is simply fantastic. He is extremely intelligent yet so user friendly, and clients love him.

London Bar > International arbitration: counsel

(Leading Silks)Ranked: Tier 1

Manus McMullan KCAtkin Chambers ‘A very authoritative advocate with an outstanding ability to master the most complex of cases. Manus has excellent analytical skills and gives clear and very pertinent advice based on a thorough review of the relevant material.’

The barristers at Atkin Chambers have ‘vast experience and remarkable knowledge in international arbitration‘, built around a market-leading standing for global construction and engineering disputes. The set’s ‘great bench strength‘ was further enhanced by the high profile arrival of the highly esteemed Stuart Catchpole KC from 39 Essex Chambers. Clients appreciate the members’ experience of working in ‘Hong Kong, the Middle East and around the world‘. They are regularly involved in long-running infrastructure disputes covering a range of industries, a prominent example being Manus McMullan KC and Christopher Lewis KC‘s ongoing role representing the Panama Canal Authority in a series of multi-billion dollar claims arising from the Third Set of Locks Project. The set’s impressive stable of experienced juniors regularly act unled, with Shourav Lahiri  and Samar Abbas Kazmi recently involved in several high profile development disputes in the Middle East.