ALM, publisher of The American Lawyer, Corporate Counsel, The National Law Journal and 30 other national and regional publications, will be sold to London-based Incisive Media for $630 million, according to a joint announcement Thursday by the two companies.

Both Incisive CEO Tim Weller and ALM CEO William Pollak characterized the sale as an opportunity to expand ALM’s business internationally and on the Internet. The deal, which is expected to close at the end of the third quarter, will leave ALM’s management intact.