Another dozen acts have been added to the Sonisphere Festival 2014 line-up for Knebworth Park this summer, including Iron Maiden’s special guests on the Saturday night.

Welwyn Hatfield Times: The Sonisphere 2014 line-up at Knebworth will include Frank TurnerThe Sonisphere 2014 line-up at Knebworth will include Frank Turner (Image: Archant)

The three-day rock and metal festival will return to the grounds of Knebworth House from Friday, July 4 to Sunday, July 6 after a two-year hiatus.

Welwyn Hatfield Times: Blitz Kids will play Sonisphere Festival 2014 at KnebworthBlitz Kids will play Sonisphere Festival 2014 at Knebworth (Image: Archant)

The UK leg of Sonisphere will help celebrate Knebworth’s 40th anniversary of staging outdoor concerts.

Welwyn Hatfield Times: Former The King Blues frontman Itch will appear at the 2014 Sonisphere Festival taking place at KnebworthFormer The King Blues frontman Itch will appear at the 2014 Sonisphere Festival taking place at Knebworth (Image: Archant)

And Team Sonisphere organisers added American alternative metallers Deftones and Frank Turner & The Sleeping Souls to the rock event’s line-up today (Wednesday), with both playing on the same stage as headliners Iron Maiden.

Welwyn Hatfield Times: Frank Turner on stage [Picture: Alan Davies]Frank Turner on stage [Picture: Alan Davies] (Image: Alan Davies)

Joining them at the Hertfordshire stately home this summer will be American ska punk pioneers Reel Big Fish, Canadian progressive metal band Protest The Hero and Scottish pirate metallers Alestorm.

Welwyn Hatfield Times: The Sonisphere Festival 2014 line-up for Knebworth ParkThe Sonisphere Festival 2014 line-up for Knebworth Park (Image: Archant)

Reel Big Fish will play the Saturn stage on the Sunday, while Alestorm will appear on the same stage on the Saturday.

Others confirmed are stoner rockers Truckfighters, reformed Irish alternative rock band Kerbdog, melodic hardcore punks Only Crime, English rock band Blitz Kids, punk/rap artist Itch, hotly-tipped Midlands punk four-piece Max Raptor and British electro/punk rockers Hounds.

As previously announced in the Welwyn Hatfield Times, Sonisphere’s local newspaper, The Prodigy, Iron Maiden and Metallica will headline the fourth UK edition of the international touring festival.

Firestarter chart-toppers The Prodigy will play the opening Friday night, with nu-metal favourites Limp Bizkit Rollin’ into Hertfordshire again as special guests.

British heavy metal legends Iron Maiden will top the Sonisphere bill on the second day.

Bruce Dickinson, Steve Harris, Dave Murray, Adrian Smith, Nicko McBrain and Janick Gers will bring their Maiden England World Tour to a fitting finale at Knebworth, retiring some songs in the process.

American thrash metal giants Metallica will exclusively close the festival on the Sunday night with their interactive ‘By Request’ set list, as chosen by ticket holders.

In the day splits so far confirmed, Seattle grunge survivors Alice in Chains will appear on the main Apollo stage before Metallica.

Also appearing across the weekend are the likes of Slayer, Anthrax, Airbourne, Mastodon, Dropkick Murphys, The Sisters of Mercy, Chas & Dave and Devin Townsend Project.

Of the latest line-up additions, Deftones and folk-punk troubadour Frank Turner are the biggest draws.

After playing the main stage at Reading and Leeds Festivals last summer, Sonisphere Knebworth will be Deftones’ only UK show of 2014.

They will play the Saturday below Iron Maiden.

Deftones drummer Abe Cunningham said: “We are absolutely stoked to be part of Sonisphere’s return and of course to have a chance to once again play a show with Iron Maiden, especially on the hallowed grounds of Knebworth.”

Frank Turner’s addition to the line-up is no real surprise considering he has a tattoo of Iron Maiden mascot Eddie.

The singer-songwriter also answered questions on Sonisphere 2014 headliners Iron Maiden as his specialist subject on his way to winning Celebrity Mastermind last month.

At the time, Team Sonisphere member and KiliLive promoter Alan Day (@alandayrocks) tweeted: “well @frankturner got more @IronMaiden questions correct than I would have done!”

KiliLive – the team behind Sonisphere and Red Hot Chili Peppers’ huge 2012 Knebworth gig – have promoted dates on Turner’s current headline arena tour, with the Tape Deck Heart singer playing the O2 Arena in London tonight (Wednesday).

Turner also performed live during Danny Boyle’s stunning London 2012 Olympics Opening Ceremony.

The former vocalist of post-hardcore band Million Dead is no stranger to Hertfordshire either, having played a sold-out concert last summer at Hatfield’s Forum Hertfordshire, just down the A1(M) from Knebworth Park.

Turner is delighted to be sharing a stage with his heroes for the first time.

He said: “I’m excited to be playing Sonisphere this year, and super excited to be playing the same stage as the first band I ever fell in love with – Iron Maiden.

“It’s definitely going to be my festival highlight for 2014.”

Of the other bands added to the Sonisphere extravaganza, a number have played in the county before.

Blitz Kids were on the Slam Dunk Festival line-up at the University of Hertfordshire in Hatfield last May, as was former The King Blues frontman Itch.

Blitz Kids also played a pre-Reading gig at The Horn pub in St Albans last August.

Southern Californian favourites Reel Big Fish – one of ‘Ska Punk’s Big Three’ – are currently touring the UK with Less Than Jake, having previously co-headlined Slam Dunk South in Hatfield.

For further information please visit the Sonisphere Festival website at www.sonisphere.co.uk

* For pictures of previous Sonisphere Festivals at Knebworth, look through our gallery of images.