There are an ever increasing amount of interests that are common within groups of out members, such as (but in no way limited to):
For new members it generally doesn't take long to get pointed to those with similar interests, also Matrix has specific channels for some of these common interests.
Members are encouraged to meet together in groups in addition to the Weekly Open Evenings.
Some subgroups which have actively met together to date are Subgroups/Young Makers Club and Subgroups/RC Club (more may have happened since, as always Matrix is the best way to keep up-to-date).