Walter David "Wattie" Buchan (born 24 July 1957) is a Scottish punk rock musician, best known as the lead vocalist for the Exploited.

Formed in Edinburgh by Wattie's younger brother Terry, they signed to Secret Records in March 1981[3] and released their debut EP Army Life.

[4] In February 2014, Buchan suffered a heart attack on stage in Lisbon, Portugal.

The Exploited cancelled the remaining of the Tour Of Chaos 2014 due to Buchan's condition.

[6] On 29 June 2014, the Exploited's Facebook page provided an update on Buchan's condition, saying that after a successful heart operation, the band was practising new material.

[7] In an interview with Rock Hard Magazine in May 2016, he said that he had suffered from depression, which was affecting his ability to write new lyrics.

[10] Buchan has condemned several politicians, including George W. Bush, Margaret Thatcher, and Tony Blair.

In an interview with I Probably Hate Your Band, Buchan expressed his pro-Palestinian views, saying: "even with Israel and Palestine, the Palestinian people are like prisoners and the world does nothing about it because America's behind them, backing them because they want bases for their airplanes in that area.

Now Gadhafi's away, fucking Saddam Hussein's away, and it's just like the people that live there just live a life of misery … even with Israel and Palestine, the Palestinian people are like prisoners and the world does nothing about it because America's behind them, backing them because they want bases for their airplanes in that area.

[2][13] Buchan has been open about disliking Crass, saying: "People listen to bands and believe what they sing about.

They said they believed in this and that, but bought record companies under other people's names so it couldn't be traced back to them.

"[2] Other than Crass, Buchan has criticized multiple other bands and musicians including Henry Rollins, Jello Biafra, Green Day, Bad Religion, Linkin Park, The Offspring, and Descendents.

They are so pop-oriented that they don't even stand for any values; they do not deserve the status of being defined as punk bands.

On the album Live at the White House, he introduces the song with an insult to Biafra and claims that he slept with his wife.

[16] In May 2016, Buchan also criticised Slayer for refusing to allow the Exploited to appear on stage with them after the Exploited had allowed Slayer to cover [collaborating with Ice-T] three of their songs for the Judgment Night soundtrack for only a small payment.

Buchan responded by mentioning Charged GBH, Carcass, No Fun at All, Skinny Puppy, and Ministry.

Buchan alleged that during the after-party Green Day member Billie Joe Armstrong confronted him and said "when you die, I'm going to be standing over your grave, laughing at ya."