The tunnels under Waterloo are opening again for the first quarter (Q1) of 2014 it seems

https://www.thevaultfestival.com/

Went to Secret Cinema there years ago, and thought it was a tidy space in the vein of Shunt Vaults (RIP) which could be used for many good things. Entering via Leake Street is a good thing too.

So what I want to know is, are any of these things worth going to? Anyone already planning to go to any of them? Why?