Phil Greatrex#1826

Phil Greatrex

Phil is a partner and founding member of CW Energy in 1990. He is well known in the oil and gas industry as one of the leading tax advisers in this field.

He qualified as a Chartered Accountant with Arthur Young (now part of EY) in London after obtaining a mathematics degree from Southampton University. After four years auditing a wide spread of industrial, service/leisure industry, and financial sector clients, he spent two years advising on accounting and UK company law issues, before transferring to specialise in corporate tax in 1982.

Since then, Phil has been providing tax advice to a wide range of clients, but mainly in the oil and gas sector, on varied, and often complex, issues from cross-border corporate re-organisations, acquisitions and disposals and litigation. He has spent time on secondments with major oil companies and advised the Government of Nova Scotia on the introduction of their offshore royalty regime.

Phil is a regular contributor of articles on various tax issues and has lectured extensively both within the profession and on outside courses. He is the author of a number of publications including, the direct taxation section of Daintith and Willoughby's United Kingdom Oil and Gas Law (published by Sweet & Maxwell), the oil taxation sections of the annual Finance Act Handbook (published by LexisNexis), the oil tax notes in LexisNexis PSL, and the tax sections of Oil and Gas Trading Manuals (published by Woodhead Publishing Ltd). He is also consulting editor for the Oil and Gas Tax section of Halsbury's Laws of England (published by LexisNexis).

As well as corporate and international tax, Phil has a great deal of knowledge and experience in the field of petroleum revenue tax, (PRT) and Government royalties which have now been abolished. He has been a member and secretary of the BRINDEX tax committee since the late 1980's, and has also been an active member of the UKOITC industry tax committee for many years. He was a member of the industry team that produced the Platform for Change document jointly with HMRC and Treasury on the alternative use of North Sea infrastructure for gas store, carbon sequestration etc. In these capacities he has extensive experience of dealing with Treasury and HMRC personnel through the regular industry forum meetings and lobbying for tax changes.

Contributed to


Oil and gas—corporation tax and the supplementary charge
Oil and gas—corporation tax and the supplementary charge
Practice notes

This Practice Note is about the ring fence corporation tax rules, and the supplementary charge, on companies in the oil and gas sector that have a UK tax presence, or that operate in the UK or on the UK continental shelf. This Practice Note was produced in partnership with Phil Greatrex of CW Energy LLP.

Petroleum revenue tax
Petroleum revenue tax
Practice notes

This Practice Note is about the rules on petroleum revenue tax (PRT), which was payable by oil companies on the value of oil and gas produced. The rate was reduced to zero with effect from 1 January 2016, but it is still possible to create losses which can be carried back to recover past PRT paid. This Practice Note was produced in partnership with Phil Greatrex of CW Energy LLP.

Practice Area


  • Contributing Author

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