The legal restrictions have been lifted but the wearing of face masks and social distancing where possible is still advised by both the government and NHS as ways to limit the spread. Personal freedom works both ways. A poll of members would be interesting. It could be that actually more members would attend provided modest precautions like face masks and social distancing were in place than would not attend because they do not wish to follow the guidelines.
British Astronomical Association
Supporting amateur astronomers since 1890