LES is an abbreviation of Licensing Executives Society. LES Britain & Ireland (LES B&I) is one of 32 member societies of the global umbrella organisation LES International (LESI) and is also one of the most active. It is the society for professionals and business people interested in licensing, the transfer of technology, and the commercialisation of intellectual property rights. Members of LES B&I include industry and university executives, scientists, engineers, academics, public officials, accountants, lawyers, patent and trademark attorneys, and consultants. The Society provides unique opportunities for multidisciplinary education and networking, locally and globally.

Through regular meetings of council, committees and special interest groups, members of the society are kept abreast of national and European Commission legislative proposals. They can also become involved at international level, and they have the opportunity to contribute to debate on crucial topical issues.