there i was sitting watching the sun going down when the wife shouted me,"come and listen to this "  when i entered the house she was convinced we had a problem with the electric lights as we both could hear what sounded like water in the lights making a very loud cricket type noise, it was only after turning various lights on and of that we realized the noise was coming from outside so around to the back of the house i went torch in hand to find the noise was coming from an almond tree as i shone the torch into the tree the noise moved to another tree then back again it was really deafening the dog at the house behind ours was going berserk and he is over 200 yards away, i have heard crickets before the brick yard where i started my apprenticeship some years ago had thousands of them but i have not heard anything like this before it was deafening, any one got a clue to what it could have been apart from triffids i have no idea

they are very loud...I hear them every time I start up my chainsaw :D
The cicadas are very noisy but seems a bit early yet

https://www.youtube.com/watch?v=TqOmdvuzC3U

http://animals.nationalgeographic.com/animals/bugs/cicada/

  There is also a very very noisy frog and when you find the source it is really tiny but very loud. Small and loud !!!!!! I have one of those I married many years ago. :-X

it was a lot louder than that you could not have made a video and talked on it the noise was deafening

The loud noise you heard probably came from cicada.
Also was probably a midwife toad, and not a small frog.

wrote on Mar 28^th, 2012 at 9:01am:

it was a lot louder than that you could not have made a video and talked on it the noise was deafening

I am afraid I can not take credit for the video hearing again their accents I seem to recall it was made by two Eaton Schoolboys I am sure you can hear a young David Cameron doing the commentary ????  ;D ;D ;D ;D

More info Re The Cicada.
http://maggs224.hubpages.com/hub/The-Cicada