The Holmesdale Natural History Club is a charity, which exists to promote the study of natural history, local history, archaeology and geology in the vicinity of Reigate.
Lectures given by visiting speakers or Club members are arranged on the third Wednesday of the month (except December and August) in the museum lecture room. Later in the month there is usually some other activity such as a walk, excursion or social event.
Annual membership fees (from January to December) are £15 per person; £21 for two people living at the same address, and £25 for a family membership covering two adults plus children. Fee for life membership for those over 21 is at the rate of ten years of the appropriate subscription.