BBC Radio 1Xtra DJ Twin B announced that Sean Paul, Tinchy Stryder, Flo Rida, Mindless Behaviour, Chip, Devlin, Boy Better Know Feat Skepta & JME and Azealia Banks are to join the already impressive line-up of acts set to perform at Radio 1’s Hackney Weekend 2012 - Radio 1’s biggest ever free* event which will take place in East London’s Hackney Marshes on 23 and 24 June.

These urban stars are set to perform on the 1Xtra stage and join the likes of Jessie J, Professor Green, Will.i.am, Swedish House Mafia, David Guetta, Deadmau5, Ed Sheeran, Dappy, Lana Del Rey, Chase & Status, Tinie Tempah, Plan B, Leona Lewis, Florence & The Machine and many more, who have already been confirmed as performing at the two day event.

An incredible 100,000 tickets are available across the weekend which is part of the London 2012 Festival and will feature over 100 UK and international artists performing on six BBC stages including the Radio 1 Main Stage, Radio 1Xtra Stage, Dance Stage, In New Music We Trust Stage and the BBC Introducing Stage.

Tickets are free, but there will be a small fee of £2.50 per ticket to cover ticket handling and administration costs. Last year over 800,000 people applied for them at Radio 1’s Big Weekend in Carlisle and demand is expected to be massive again this year.

Radio 1 listeners must register their interest to attend and upload a photo at bbc.co.uk/radio1. Registration is now open and closes at 11pm on Monday 19 March.

For those that have registered there will be two opportunities to apply for a ticket - 11am on Sunday 25 March and 4pm on Monday 26 March, online or by phone. The majority of tickets will be reserved for those from Hackney and the other five Olympic boroughs, with allocation on a first-come, first-served basis.

The full list of artists that have been announced so far include:

Andy C, Azealia Banks, Bombay Bicycle Club, Boy Better Know Feat Skepta & JME, Calvin Harris, Chase & Status, Chip, Dappy, David Guetta, D'banj, Deadmau5, Devlin, DJ Fresh, Ed Sheeran, Emeli Sande, Eric Prydz, Flo Rida, Flux Pavilion & Doctor P, Florence & the Machine, Jack White, Jessie J, Labrinth, Lana Del Rey, Leona Lewis, Magnetic Man, Maverick Sabre, Michael Kiwanuka, Mindless Behaviour, Nero, Plan B, Professor Green, Rizzle Kicks, Sean Paul, Sub Focus, Swedish House Mafia, Taio Cruz, The Maccabees, The Ting Tings, Tinchy Stryder, Tinie Tempah, Will.i.am, Wretch 32.

There are some huge names to be added to the line-up in the coming weeks - keep listening to Radio 1 and 1Xtra for details.

This special event is being produced in partnership with Hackney Council.

Radio 1 will also be embarking on a month of outreach activity in East London ahead of the main event, including the Radio 1 & 1Xtra Academy that opens on June 1st, keep listening to Radio 1 and 1Xtra to find out how to get tickets to the Academy.

Notes to Editors

* Tickets for the event are free but there will a small booking fee. To read about this fee please see the website.

The event goes to a different area in the UK each year and Radio 1 will again give priority to applicants in the region. Tickets will be allocated randomly, but weighted in favour of those living in Hackney and the other five Olympic boroughs with a smaller amount distributed throughout the rest of the UK.

Radio 1 has secured four first class ambassadors to champion the event and be involved in the programme of outreach activity in the build up to BBC Radio 1's Hackney Weekend 2012. The ambassadors are one of the UK’s most successful musical exports: Leona Lewis who grew up in Hackney; Radio 1/1Xtra DJ Trevor Nelson MBE and World and European Triple Jump Champion Phillips Idowu, who were both born in Hackney; together with East London’s award-winning artist and actor Plan B.

As host nation broadcaster for London 2012 the BBC is broadcasting a wide range of Olympic programming in 2012; including the London 2012 Festival, the Olympic Torch Relay and the London 2012 Olympic Games.

The BBC will have extensive coverage of the Games from 27 July to 12 August on television, radio, online and mobile, including live action of every sport from every venue where it’s happening throughout every day on bbc.co.uk/sport.