We were asked by the BBC quiz show QI to create their logo in an oil seed rape field.

Rock group Korn invited us out to California to create a crop circle for them to perform in.

Here's the best of the bunch from the 2007 crop circle season.

We were delighted to be invited by Greenpeace to travel to Mexico and create a crop circle in Maize as part of their GM crop campaign.

We were asked by a Danish newspaper to make a crop circle that said STORE ORD (BIG WORDS) as a PR stunt.

Shredded Wheat asked us to create their logo in a wheat field. The image will be used on their cereal box, it's a match made in heaven!

Here's the best of the bunch from the 2006 crop circle season.

We were asked to journey right across the US (California, Oklahoma and Florida) by Microsoft to tie in with the launch of its X-Box 360 games console

We were asked to create a crop circle for the landmark BBC1 art series A Picture of Britain presented by the legendary David Dimbleby.

We hooked up with The Sun newspaper again to pull of a daring mission in France.

We were asked by Sky TV to create the largest Sudoku puzzle in the world, which is exactly what we did just outside Bristol.

We hooked up with The Sun newspaper and took our work to an audience of 8.5 million readers.

Nike flew us out to Italy to create crop circles in Milan, Rome and Foggia, as part of their Nike Free advertising campaign.

The best bits of the 2005 crop circle season.

We created a demonstration formation for National Geographic TV.

BBC Drama asked us to create them a crop circle for their 'Sea of Souls' series.

To celebrate Hello Kitty's 30th anniversary we created a kitty circle!

This is where we separate the 2004 crop circle seasons wheat from the chaff.

We created a massive sand portrait of three of Britain's comedy greats, Del Boy, the Vicar of Dibley and Alan Partridge on a Devon beach.

The best bits of the 2003 crop circle season.

We were asked to create a crop circle that would be part of the largest card trick in the world!".

Us British tend to venture forth to the seaside whenever a bank holiday comes around and that's what we did in Aug 03, courtesy of mobile phone operator o2.

The 2003 crops might have gone, but that hasn't stopped the appearance of what appears to be crop circle designs in grass and sand on both sides of the Atlantic.

When we created a large scale advert that could be seen from planes landing at Gatwick airport we didn't realise that we might be heading for the record books.

We were asked to create several formations for the launch of Big Brother 4.

Documenting the interesting bits of the 2002 crop circle season.

If it was good enough for Andy Warhol it's good enough for us. In mid September 2002 we were asked to create a 250ft celebrity portrait.

During the first week of September 2002 just as everyone had assumed that this years crop circle season was over, something unprecedented happened.

Crop circles are now well and truly enshrined in our popular culture, so we weren't surprised when we were asked to create a formation for a pop video.

See the crop circle we created for our website sponsors pair.com!

When the cult Channel 4 TV comedy/game show "Banzai" asked us to create a formation for them we couldn't refuse.

We were asked by Weetabix to create a crop circle for their new advertising campaign.

We were asked by the History Channel to make a formation for their "History vs. Hollywood" show about the movie "Signs".

Rod Irving's photographic journey through the crop circle phenomenon.

The formation we created near Silbury Hill for broadcaster HTV West.

Documenting the interesting bits of the 2001 season.

We were flown out to Washington State to create a crop circle to be used in an advert for Mountain Dew, a high caffeine soft drink produced by Pepsi Inc.

Documenting the most ambitious and original designs of the 2000 season.

Here we present what we feel are the best formations of 1999.

We were asked to create a formation accompany an article about us in the Daily Mail.

We were asked to create a formation for the Mitsubishi 'Space Star' car advert.

During the 98 season a couple of circlemakers made tracks for the famed 'Barge Inn'...

We realised one of our collective ambitions recently and the BBC were there...

The circlemakers recently visited New Zealand to make a crop formation on camera...

Here we present what we feel are the best of the 1998 formations.

A selection of photograps of crop circle formations from the past four years.