Coldplay have announced that Marina & The Diamonds and Robyn will be special guests on their forthcoming European tour.

Marina & The Diamonds will play the majority of dates, whilst Robyn will perform on the 29th May at the Coventry Ricoh Stadium, 2nd and 4th of June at the Emirates Stadium in London, the 7th June at Sunderland Stadium Of Light and the 9th and 10th of June at Manchester City Stadium.

Also joining the group on a selection of dates will be Ash, Rita Ora and Frank Ocean.

Coldplay recently won the BRIT award for Best British Group. Their new single 'Charlie Brown' is released on March 19.

Full tour dates as follows:

• 18/05/12 Porto - Dragao Stadium w/ Marina & the Diamonds and Rita Ora
• 20/05/12 Madrid - Vicente Calderon w/ Marina & the Diamonds and Rita Ora
• 22/05/12 Nice - Stade Charles Herman / Nikaia w/ Marina & the Diamonds and Rita Ora
• 24/05/12 Turin - Olympic Stadium w/ Marina & the Diamonds and Rita Ora
• 26/05/12 Zurich -  Letzigrund stadium w/ Marina & the Diamonds and Rita Ora
• 29/05/12 Coventry - Ricoh Stadium w/ Robyn and Rita Ora
• 01/06/12 London - Emirates Stadium w/ Marina & the Diamonds and Ash
• 02/06/12 London - Emirates Stadium w/ Robyn and Rita Ora
• 04/06/12 London - Emirates Stadium w/ Robyn and Rita Ora
• 07/06/12 Sunderland - Stadium of Light w/ Robyn and Rita Ora
• 09/06/12 Manchester - City of Manchester Stadium w/ Robyn and Rita Ora
• 10/06/12 Manchester - City of Manchester Stadium w/ Robyn and Rita Ora
• 28/08/12 Copenhagen - Parken Stadium w/ Marina & the Diamonds and Frank Ocean
• 30/08/12 Stockholm - Olympic Stadium w/ Marina & the Diamonds and Frank Ocean
• 02/09/12 Paris - Stade de France w/ Marina & the Diamonds and Frank Ocean
• 04/09/12 Cologne - Rhein Energie Stadium w/ Marina & the Diamonds and Frank Ocean
• 06/09/12 The Hague - Malieveld w/ Marina & the Diamonds and Frank Ocean
• 12/09/12 Munich - Olympiastadion w/ Marina & the Diamonds and Frank Ocean
• 14/09/12 Leipzig - Red Bull Stadium w/ Marina & the Diamonds and Frank Ocean
• 16/09/12 Prague - Slavia Eden Stadium w/ Marina & the Diamonds and Frank Ocean
• 19/09/12 Warsaw - National Stadium w/ Marina & the Diamonds and Frank Ocean
• 22/09/12 Hannover - AWD Arena w/ Marina & the Diamonds and Frank Ocean

www.coldplay.com