The Tosca opera is being beamed live from the Royal Opera House to big screens at Canary Wharf tomorrow (Thurs).

The free relay will be direct from the stage in Covent Garden to Canada Square Park, as part of this year’s nationwide BP Big Screen event.

Broadcaster and gardener Alan Titchmarsh is introducing the show from the Royal Opera House while TV presenter and stand-up comedian Kirsten O’Brien will be among the crowd in Trafalgar Square where other big screens will be put up.

Tosca, a heartwrenching tale of passionate love, jealousy, murder and suicide will feature Martina Serafin as the tragic Tosca and Aleksandrs Antonenko as her lover Cavaradossi, with Scott Hendricks as the evil Baron Scarpia who plots their destruction.

The screening of Tosca starts at 7.30pm.