Derek started his career in community pharmacy and then transitioned through the profession into a senior corporate role. Having always enjoyed practising travel medicine he started one of the first corporate chains of travel health practices in pharmacies. He decided to leave his corporate world and started his own travel health consultancy. As an independent prescriber specialising in travel medicine he is a Member of the Faculty of Travel Medicine.
As part of his work Derek has been instrumental in developing the educational standard of practice in travel, publishing several papers on the subject and being awarded adjunct Clinical Professor of Pharmacy Practice at KGI School of Pharmacy, Los Angeles. Derek is the current Chair of the ISTM Pharmacy Group, a Fellow of the Royal Geographical Society for his work on water filtration systems and the first pharmacist to be awarded Fellowship of the Royal Pharmaceutical Society for travel medicine.