David Prosser points out (by email) that „back in 2002 the UK Office of Fair Trading issued a Statement on the market for scientific, technical and medical journals. In it, they listed the publishers of ISI-rated STM journals (Table 1, page 7). If this sale goes through then the top 15 publishers (in terms of number of journals) will have become just 9 publishers – a remarkable case of market consolidation in just 8 years.“ [via OAN]