Contributions (slides, posters, discussion) to a conference on Hydrogen-Deficient Stars, held at the Armagh Observatory and Planetarium, from 10 - 14 September 2018. 

Organizers and delegates gratefully acknowledge financial support from the Royal Astronomical Society, the Armagh City, Banbridge and Craigavon Borough Council, the Northern Ireland Dept for Communities and the UK Science and Technology Facilities Council.