I attended this one, more from this year in my gigography for 2015. Part of all the gigs I was at from 1987 to '20. A natural progression from my Best Gigs Ever blog post. Yeah I know very geeky, let's let that go though, I'm enjoying reminiscing about these stuff.
Go to Folkestone Harbour, and then head as far out to see as you can without getting your feet wet. See the lighthouse? You're there!