The University of Hertfordshire is delighted to be hosting Exoplanets and Brown Dwarfs: Mind the Gap. This year represents a milestone of sorts as the 18th anniversary of the first discoveries of both planets around Sun-like stars and brown dwarfs. The last 18 years have seen the study of these fascinating objects flourish into diverse and exciting astronomical fields. However, as these scientific siblings reach adulthood, there is a danger of missed opportunities as they drift apart. The aim of this meeting is to bring the exoplanet and brown dwarf communities together to explore common science questions, share exciting results, and foster collaboration to overcome shared challenges.