Alton Towers is offering free entry to its 30th anniversary 80s celebration event on May 23, 2010 to the first 100 guests who bring a cassette recording of one of the performing artists.

Those wishing to take advantage of the offer will need to provide a cassette of one the acts upon entry and should visit the pre-booked ticket collection window on arrival. A maximum of 1 guest will be admitted per cassette, with the offer being limited to just 100 free tickets and ending at 10am.

Acts performing at the concert include Rick Astley, Kim Wilde, Bananarama, Midge Ure, The Christians, Curiosity Killed the Cat and The Here & Now Band.

For full details of the 1980s celebration, see the event page on the Alton Towers website.