In order to gain full access institutions and users have to register with the LEP. Currently, 128 different scientific and 6 industrial institutions are registered in the LEP. These institutions include a total number of 188 registered users. Most users belong to 18 different European countries, although there are non-European registrations from 8 countries (Table 1). The contact details of institutions and user registered in LEP are attached in appendices 1 and 3, respectively.