In 2008, the World Health Organisation Commission on Social Determinants of Health  called for ‘closing of the gap’ in health inequalities within a generation. Reducing health inequalities has been a priority for successive UK governments . The needs of the most marginalised groups have however, been neglected. Gypsies and Travellers are one socially excluded group where evidence for improving health is weakest . It is estimated that there are 150,000–300,000 Gypsy/Travellers in the UK , this however is likely to be an underestimate. Due to widespread stigma and discrimination, many Gypsy/Travellers do not disclose their identity . This paper provides an overview of a multi- component study that aims to strengthen the evidence regarding how to improve uptake and delivery of health services and thereby reduce health inequalities for Gypsy/Travellers.