Question - Tunnels in and around Brighton ?

[tribaleye]

Does anyone know of any accessible tunnels in or around Brighton? Want to experiment on lighting tunnels for a project. I'm aware of the one from Brighton Pavilion to the Dome and various access tunnels to the beach, as well as the disused Kemptown railway tunnel and an of air raid shelter. Any other ideas much appreciated. Ideally want easy access 24/7 or after dark as necessary (better for the photography if dark)

 

[Lizzyemma]

Had you ever found anything in the end?