A biotech firm has expanded its offices after enjoying major growth.

Genzyme first opened on the Oxford Business Park in 2001 with 15 staff to support the supply of its products for chronic diseases.

Now it has 80 workers - with that figure expected to top 100 next year - and has increased its office space.

Paul Drohan, vice president and general manager of Genzyme UK & Ireland, said: "The opportunity to work closely with the world-class academic, medical and business communities in Oxford makes it an ideal location.

"And the fact that we have now more than tripled our office space since we arrived in 2001 means we are looking to be here for years to come."

Genzyme employs more than 500 staff at its four sites across the UK and 9,500 worldwide, providing treatments for the management of genetic disorders, kidney disease and thyroid cancer.

Bosses celebrated the expansion with an open day attended by Oxford East MP Andrew Smith as well as healthcare professionals and patient groups.