Today I was sent to Coventry, quite literally. Together with 30 other Climate Camp activists dressed as Santa we descended on E.On, the energy company responsible for the proposed new coal fired power station to be built at Kingsnorth.

This action followed a 48 hour action that happened over last Friday and Saturday - and E.On were not expecting our return. In fact, they were probably kicking themselves that the special fencing that they had put in place late last week was now lying dismantled on the floor next to their headquarters.

As a result our merry busload hopped off easily and headed straight for the main entrance of E.On's offices.

Why? Despite spending a lot of time and energy letting the public know that they are one of the biggest investors in renewable energy in the UK (they'll point out the big array of solar panels on one of their buildings and the lobby features a looped tape about wind farms) they are also pitching to build the first new coal fired power station to be built in the UK in 30 years, which will alone defeat all our CO2 emissions goals. So why spend so unwisely?

Whilst some merry santas climbed atop the revolving door and superglued their hands to the various entrances, another bunch of santas headed off into the building to see if they could speak to head honcho Paul Golby and let the employees know a bit more about the facts behind new coal.

Bearing banners that said Stop Coal and E.On F.Off they set off down the corridors singing some specially adapted carol songs.

Two intrepid santas managed to enter a boardroom meeting, surprising the attendees with some gifts of lumps of coal - for as you know santa gives bad children coal instead of gifts and E.On has been very bad this year. They were ejected from the property, but soon raced back in again...

We managed to disrupt operations for four hours, stopping employees and visitors as they came to work and giving interviews to the BBC and ITV, and live on the radio. Our action was spoken about on the World at One on Radio 4, which you can listen to here. We are talked about at approximately 8 minutes and 20 seconds into the programme.

The police were surprisingly even handed, although some employees were clearly fuming, especially the head of security (woops) One indoor santa even managed to locate a cup of tea and a newspaper to read.

At one point we were able to reenter the building, with the santas forming a conga line for the cameras. We delivered papers written by leading NGOs describing why there is no need for coal power, and generally had a merry old time. All employees and visitors were rerouted through back entrances, so I think it is fair to say that we were fairly disruptive...

Eventually we decided that once unstuck it was best that we leave, but the police had other ideas, and as we walked off down the road they tried to contain us, managing to trap four of our number and arrest them.

The rest of us ran off down the street to find our getaway vehicles, parked up in a local pub car park. Our drivers had thoughtfully bought us lunch in the pub, but shortly after we had gulped it down we were asked to leave because the police presence was putting off other customers. The police followed us as we left to pick up the other santas at Warwick university student union, and thereafter ensued the slowest police chase ever, with us managing to lose them after taking a wrong turn.

The purpose of this action was to embarrass E.On and raise awareness of what they up to in a light hearted and humourous way - I think that as a bunch of merry santas we did this exceptionally well. We hope that E.On will take heed and stop greenwashing their plans. It's simple, don't build Kingsnorth. Spend your money increasing your (meagre) renewable energy. If you would like to help us stop companies like E.On destroying our world check out what Climate Camp is up to next.