You may bring a low value torch but only use it to avoid scares as below.
We make much use of the dark . We light your route with very minimal lighting which means that when you are moving through the dark or near dark you should take special care. Shining a torch may destroy the very effect we try to create.
If you, or anyone in your group, does show a light, of any sort including a mobile phone light, we may take that as an indication that your whole group wants to avoid scares. Scares may not then operate, though we cannot guarantee this. We'll try to conduct your group off the Scarezone as soon as we can.