Juan Castella, an economist from Barcelona, began his career in the potato industry at the family business J. Castella, one of the leading companies in Barcelona dedicated to the ware potato trade in Spain.

At 24, Juan Castella entered the seed potato industry. He began working with LMSA (Luis Matutano SA), a visionary company that recognized from the outset the future importance of plant breeders' rights. Through joint trials with Pepsico, the potential of the Austrian variety Hermes for the processing industry was identified. Multiplication began in Scotland. LMSA obtained exclusive marketing rights in Spanish territories for Agrico (Netherlands) varieties.

Relocated to the United Kingdom with Matutano to the company LM Trading Ltd (Luis Matutano Trading Ltd.), which soon changed its name to Agrolon Ltd, establishing contacts with the main potato variety breeding centers in Europe.

With Agrolon's technical staff, trials of protected varieties were established in many countries to assess their potential compared to traditional varieties. The Cara variety was introduced in the Canary Islands, among others, as well as other varieties in different countries.

Initiated micropropagation and co-founded a company in Slovenia with Agrico. Imported early potatoes from the Balearic Islands and participated in ware potato imports for the Canary Islands. Worked closely with seed producers in Spain.

Agrolon was integrated into Agrico. J. Castella founded Pan European Potato Enterprise Ltd (Pep Ltd) with former Agrolon Ltd staff, maintaining most contracts with breeding centers, primarily REP of Ireland (IPM Ltd) and Cygnet PB in the United Kingdom. Agrico retained Spanish territories through Matutano.

Pepsur Marketing SL was founded, controlled by Pep Ltd, for the introduction and development of potato varieties in Spanish territories and export from the Iberian Peninsula.

Pep Ltd, together with Agrico Netherlands, founded Interseme in Slovenia for the marketing of protected varieties in Slovenia and other Balkan countries.

Together with Cygnet PB (the leading variety breeding company in GB) in a joint venture with Pep Ltd, Cygnet Pep Ltd was founded for the worldwide introduction and development of Cygnet PB and open varieties outside the United Kingdom. Some achieved great success, such as Kingsman, La Strada, Elland, etc. Interseme in Slovenia became part of Cygnet Pep.

David Sánchez, Agricultural Engineer, joined Pepsur. He is currently the Technical and Commercial Director, with international recognition.

Pep Innovation Ltd was founded, controlled by Pepsur Ltd, exclusively dedicated to the Canary Islands market with its very special characteristics.

Pep Ltd ceased involvement in Cygnet Pep to focus primarily on Pepsur, Spanish and Portuguese territories in the introduction of varieties it represents from various breeders, as well as the export of ware potatoes from the Iberian Peninsula.

Pepsur Portugal was founded. 100% controlled by Pepsur.