Mark Allen, 74, founded this group with two journals in 1985. It now owns more than 70 publications and runs 200 events and exhibitions a year across diverse sectors, including medicine, manufacturing, technology and music. It also offers professional development training in healthcare and education. Chief executive Ben Allen, 44, oversaw international sales of £8.2m last year.

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Company details
Year2019
Rank89
CompanyMark Allen Group
ActivityPublisher and events organiser
LocationSouth London
2-yr av intl sales growth pa62.16%
International sales £000s8,243
Total sales £000s43,383
Staff324
Founded1985
Websitewww.markallengroup.com

If applicable:

* Supplied by company † Annualised figure