For counties that don't have a dedicated fly group there is often a more general invertebrate group that includes flies within its remit. Here are the ones we've been alerted to (let us know if your local insect or invertebrate group is missing from this list).
- Bedfordshire Invertebrate Group
- Buckinghamshire Invertebrate Group
- Herts Invertebrate Project (part of Hertfordshire Natural History Society)
- Leicestershire Entomological Society
- London Natural History Society (ecology and entomology section)
- Sorby Invertebrate Group, Sheffield (with an active focus on Diptera)
- Staffordshire Invertebrate Group (see also their Facebook page)