Welcome to the Website of the British Arachnological Society (BAS). Here you can find information on all things arachnological. Our emphasis is on British spiders but we also include other arachnids, particularly Harvestmen (opilionids), Pseudoscorpions and Scorpions.
The BAS is Britain's only charity devoted exclusively to the study and understanding of arachnids. It is run entirely by volunteers, with no paid staff.