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One Essex Court

Chambers of Lord Grabiner QC

Work 020 7583 2000
Fax 020 7583 0118
London, Singapore

John McCaughran QC

Work 020 7583 2000
One Essex Court (Chambers of Lord Grabiner QC)


Barrister specialising in general contractual disputes, jurisdiction and conflict of law issues, professional negligence cases, arbitrations (a series of international arbitrations in the oil and gas industry; other commercial arbitrations both international and domestic), worldwide Mareva injunctions and disclosure orders. Recent work includes: Peter R Wilkinson v 1) West Coast Capital 2) Christopher S Gorman 3) James C McMahon 4) Thomas B Hunter 5) Jonathan D Elvidge 6) The New Gifts Company 2003 Ltd 7) The New Gadget Shop Ltd 8) The Gadget Shop Ltd [2005] EWHC 3009 (Ch) – unfair prejudice petition alleging diversion of corporate opportunity; British Gas Trading Ltd v 1) Amerada Hess 2) Perenco (UK) Ltd – dispute concerning gas supply contracts; British Gas Trading Ltd v Premier Power Ltd – dispute relating to gas supply contracts in light of Network Code changes; Taylor Thomson v 1) Christie’s 2) Marquess of Cholmondeley [2004] PNLR 42 whether auction house/seller are liable in respect of sale of antique vases; Npower v First Contact Ltd – concerning Commercial Agents Regulations, acting for a large firm of international accountants in two actions for professional negligence brought against them by Lloyd’s insurance syndicates, representing a firm of City solicitors being sued for professional negligence.


Qualified 1982, Gray’s Inn, bencher.



London Bar

Commercial litigation

Within: Commercial litigation – Leading silks

John McCaughran QC - One Essex CourtA brilliant mind and an excellent advocate – calm, assured and easy to work with.

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Within: Energy – Leading silks

John McCaughran QC - One Essex CourtA legend.

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International arbitration: counsel

Within: International arbitration: counsel – Leading silks

John McCaughran QC - One Essex CourtExtremely calm and great to be with in a crisis, and also exceptionally good with clients.

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Legal Developments worldwide

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  • Consolidated Group (Income Tax) Rules, 2019

    On 31 May 2019, Malta published the “Consolidated Group (Income Tax) Rules". The rules will come into force as from year of assessment 2020 and the rules introduce the concept of fiscal units into Maltese tax law .
  • Renewable energy in Ukraine: green auctions launched

    In the first half of 2019 alone, renewable energy facilities with a capacity of more than 1.5 GW were connected to the Ukrainian grid, with about 96% of those being solar and wind energy facilities. In the whole of 2018, which has been a record-breaking year so far, numbers were almost half as high. The Ukrainian market also remains very attractive to foreign investors, not least because of the lucrative feed-in tariff rates, which are paid out regularly. Now, after the adoption of the so-called law on green auctions, significant changes can be expected.
  • Economic Substance Requirements - Fund Managers

    The International Tax Co-operation (Economic Substance) Law, 2018 (the “ES Law”) came into effect in the Cayman Islands on 1 January 2019, requiring in-scope entities that carry on particular activities to have demonstrable economic substance in the Cayman Islands.
  • Shipping at the spotlight of terrorism

    Is terrorism the new norm for shipping?
  • Adidas three stripe Trademark Revocation

    In a judgment of the General Court of the European Union of the 19th June 2019, Adidas saw their hopes of extending their three stripes trademark dashed, as the court ruled that there was no distinctiveness in the three stripes trademark. Furthermore, the court held that the Adidas had failed to prove that the mark had acquired distinctive character through use throughout the member states of the EU.
  • David against Goliath – Libra vs Central Banks: Who will win?

    Working in the crypto and DLT space is like being on an emotional rollercoaster with feelings which range from curiosity, excitement, euphoria, revelation, shock, disappointment, hope, wonder and determination – did I miss any?
  • UK Telecoms company fined £100K over unsolicited marketing messages

    The Information Commissioner’s Office (‘ICO’) which is the UK’s data protection supervisory authority, recently issued a fine of £100,000 to EE Limited, a telecoms company operating in the UK. The fine was issued in response to EE Limited having sent two and a half million unsolicited direct marketing messages to its customers, back in early 2018. The direct marketing messages were sent without EE Limited having first obtained the required consent to send them to its clients.
  • British Airways and Marriott International Inc. face huge fines from UK data protection authority

    British Airways (‘BA’) may be hit with what will be the highest-ever penalty which the Information Commissioner’s Office (‘ICO’), the UK’s data protection supervisory authority, has handed out.
  • UAE Tax domicile certificate

    Issued by the Ministry of Finance in the United Arab Emirates (‘UAE’), the Tax Domicile Certificate (also referred to as the Tax Residency Certificate) enables eligible government entities, companies and individuals to take advantage of double taxation avoidance agreements on income signed by the UAE.
  • The Cayman Islands Data Protection Law, 2017

    The following information relates to the enactment of The Cayman Islands Data Protection Law, 2017 (" DPL "), which was expected to come into force on 29 January 2019, will now come into force in September 2019. The DPL will regulate the future processing of all personal data in the Cayman Islands.