From 1957 until 1964 Professor Randell was employed in the Atomic Power Division of the English Electric Company Ltd, Whetstone, Leicester, including working on compilers for the ALGOL 60 language. For records relating to occasional consultancy to International Computers Limited (ICL), a successor to English Electric Computers, see BR/16

From 1964 to 1969 Professor Randell worked for IBM at the T.J. Watson Research Center, Yorktown Heights, New York, and later in California, working on computer architectures, and on operating systems and system design methodology. Some items dating from after 1969 but relating to series begun while Professor Randell was at IBM have been included here.

The Newcastle Connection software system was designed to link UNIX systems, and was then commercially licensed for use. The software was distributed by MARI (see BR/14). For reports relating to the Newcastle Connection, see also BR/3/19/16/4 and BR/3/19/16/6).

Professor Randell was a member of the Advisory Board.

Professor Randell was a trustee and a member of the Board of Directors for the Museum at Harvard University, Boston, USA.

The Microelectronics Applications Institute (MARI) was founded in 1979 as a non profit making research, development, and training organization in Newcastle, jointly owned by Newcastle University, Newcastle Polytechnic and Computer Analysts and Programmers Ltd (for which see BR/22/5/1). Professor Randell was a Director of the Company. The Advanced Microtechnology Applications Ltd (AMA) was a wholly-owned subsidiary of MARI, which acted as its trading and commercial arm. On 9 January 1990, the name of the company was changed to The Northern Regional Information Technology Research Institute. For the Newcastle Connection software system distributed by MARI see BR/15. For photographs of historical computers relating to the MARI 10th anniversary lecture see BR/3/21/3

From 1994 Engineering and Physical Sciences Research Council. Professor Randell contributed to the work of a number of meetings and panels.

ESPRIT was a European Union programme of research managed by the European Commission Directorate General for Industry from 1983 to 1998. Professor Randell was an advisor to the Programme and a collaborator within it. See BR/9 for the Information Society Technologies Research Programme which succeeded ESPRIT.

Professor Randall provided occasional consultancy to International Computers Limited (ICL), a successor to English Electric Computers (for which see BR/1).

Professor Randell contributed to a number of European Union initiatives. See BR/8 and BR/9 for the ESPRIT and Information Society Technologies Research Programmes.