The opening day of the Barclaycard British Summer Time (4th July), will be devoted to metal, the headliners will be Black Sabbath and for one night only the event becoms 'Black Sabbath Time'.

Ozzy said: "The first time I came to London I didn't have a pot to piss in and I spent the advance I got for the first album on a new pair of shoes and some Brut aftershave...We are beyond honoured to be allowed to put on a show and hope that the Royals will enjoy the it!" 

Also on the bill are some of the biggest names in metal:
Great Oak Stage - Soundgarden, Faith No More, Motorhead, Soulfly
Barclaycard Unwind Theatre -Hell, Kobra And The Lotus, Broken Hands, The Bots
Village Hall - Gallows, Bo Ningen, The Graveltones, Hang The Bastard, A Plastic Rose
Summer Stage - Hell, Kobra And The Lotus, Broken Hands, The Bots

Bristish Summertime takes place from Fri 4th - Sun 17th July at Hyde Parl London.
Tickets for Black Sabbath Time go on sale on 4th April and will be available via Festivals For All.