It was know as RepRap festival for many years but after the passing of Sanjay Mortimer of E3D fame it’s been renamed, it’s a 2 day event for 3D printing fans, many people of the will be present as well as manufacturer showing new products and people just showing their projects
it’s in oxford:
https://www.sanjaymortimerfoundation.org/smrrf23
I will be there and I’m honestly pretty excited about it!