I am getting increasingly worried about a bonfire on a beach directly opposite me. A group of teenagers roughly 14 to 18 have been there since about 4.30 and have been building up a bonfire, it is now huge and they are getting louder and louder. It is at least half a mile to the nearest house and they are now running around the beach with lit driftwood. Whilst I think it is dangerous I am a little worried since I live here alone and there would be no doubt about who phoned. I thought it might be better to call the fire brigade, any ideas?