The helicopter flies off upstream, and crews pour out of the woods. The inflatables got off easily, the IKEAs (build it yourself rafts) had a little bit more trouble and two, sadly, were intercepted by police launches almost immediately.

Others got away fine though, and sailed happily down the Medway towards Kingsnorth.

One crew stopped off on the way at an old fort to make a banner drop "Coal - Starting Gun for Climate Chaos" before ploughing on against a falling tide and getting stuck in the mud.

Afterwards we met up with the Coastguard. They were very friendly and complimented the crews on their attention to safety. But they were scathing about police activity earlier in the week. "When we heard they'd raided the camp and seized life jackets our hearts dropped" they said. "It was irresponsible and could have put lives at risk".