Photonics is of enormous importance to scientific research and for in industry and use is growing. You will want to visit if you have a need for photonics equipment or a solution that can be, or may be, solvable by photonics.

There is the conference with multiple parallel sessions providing the latest solutions
There are tutorials and educational forums being presented by industry specialists
And there is the exhibition - now in its 20th year, it is the UK’s largest dedicated for optics, photonics and vision technologies

https://www.photonex.org/