Magazines, websites, events, books, manuals and directories covering engineering, architectural and urban design


*** On 5 June 2019 Crambeth Allen Publishing Ltd was acquired by Metropolis International, parent company of EMAP Publishing.

All of the staff are transferring with owner Nic Allen retaining a consultancy role going forward. The business will be run under Metropolis’s business to business division EMAP, reporting into Managing Director Richard Watts. Nic Allen, chief executive of Crambeth Allen said “We are really pleased to have found a new home for PTQ and Since 1996 we have which provided the best information in the sector for engineers, written by engineers. We are sure the brands will prosper under Metropolis with its excellent history of growing and building media brands.”

Robert Marr, chief executive of Metropolis said “We are really pleased to welcome PTQ, Digital Refining, and all the team to Metropolis. They are brands with a real connection and heritage in their sector, and we look forward to developing them with the current team. The acquisition continues the development of Metropolis and aligns with our vision of delivering sustainable profitable futures for well-managed media brands.” ***


Over the past quarter century Crambeth Allen has published on subjects as varied as dimensional stone, urban design and steelmaking technology. However, in recent years we have focussed on disseminating information – in print, online and through events – relating to technological developments in the hydrocarbons processing industries. Whatever the media, we’ve applied the same formula: in depth case studies examining technological solutions to increase productivity, overcome problems and meet constantly evolving environmental and energy efficiency standards. Our watchword is pragmatism: demonstrating proven technological solutions of direct benefit to engineers on the ground.

It’s an approach that’s worked well and built a successful publishing business serving a worldwide audience. How do we measure that success?

By industry recognition, exemplified by our shortlisting as PPA International Business Magazine of the Year or by our gaining Britain’s premier business accolade, the Queen’s Award for Industry.

By our building up, and continuing to develop, a loyal network of clients who include many of the world’s blue chip energy companies

Most of all, by accumulating a global readership and reputation as a foremost industry authority including in our output the world’s leading quarterly magazine and the world’s largest freely available online source of information covering these industries.

Our Magazines

PTQ is the authoritative magazine covering process technology developments in the refining, gas and petrochemical industries. Each issue of PTQ carries at least 15 in-depth technical feature articles from around the world charting experiences under operating conditions in improving production or safety or meeting environmental targets. It is the practical and detailed nature of these articles which makes PTQ required reading for engineering decision makers everywhere.

Other magazines that have been published by Crambeth Allen include Catalysis, our annual review of hydrocarbon industry catalysts and their use in process technology; Hydrocarbon China, a Chinese-language magazine specifically targeted at the refining and petrochemical industries in China published in conjunction with the CPP of Sinopec, and Asia Steel, an annual review of steelmaking technology.

Our Websites

has been backing up PTQ magazine since 1998 and also providing other services such as our Technical Q&A and Technical Writing Style Guide published in conjunction with the Bahrain Petroleum Company (BAPCO).

launched in 2012, is a groundbreaking venture making freely available the largest quantity of refining technology information on the web. is the bilingual Chinese version of

Our Conferences

Refining China and Refining India

In 2006 we pioneered international refining conferences in China with the first Refining China, held in partnership with the China Petrochemical Press of Sinopec and in 2013 we applied the same approach in India with the first Refining India event in Delhi. Refining India now attracts some 200 delegates from all the major Indian Operating Companies – including IOCL, Reliance, Essar, BPCL, HPCL and MRPL – and has been addressed by both the chairman and Managing Director of IOCL. It serves as a very positive brand extension to PTQ and Digital Refining.

Our Studies, Directories and Books


Other publications from Crambeth Allen have included multi-client studies, directories and books.

Multi-client studies can provide information of a quality normally only to be found in the most expensive individually commissioned consultancy reports. If you can benefit from just one of the insights contained in our study, The FCCU in Transition, it will have paid for itself many times over.

The World’s Building Granites is our multilingual directory covering the international dimensional granite market from source.

Crambeth Allen has a long history of book publishing, stretching back to such important architectural and urban design publications as Civilising the City and Architecture in Stone.

Crambeth Allen

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