Gormley sculptures feature in radio drama

Jump – to be broadcast in Radio 4's Afternoon Play slot at 2.15pm on Friday 15 June (also available on-demand for 7 days) – follows a free-runner as he moves through the South Bank in the hope of recovering something he's lost.

From his starting position above Hungerford Bridge he notices that the regimented pattern of the commuters has shifted – their habitual straight lines are parting around a single man, stood still in the centre of the pavement. On closer inspection, the man is not human at all – he is iron, naked and not alone.

Recorded on location on the South Bank the drama weaves together snippets of interviews with people working and living in the area and their responses to the Gormley sculptures which have been installed on rooftops north and south of the river.

Petitions to make Event Horizon permanent

Two internet campaigns have been launched calling for the Gormley scultures to become a permanent fixture on the South Bank.

Miranda Chadwick started a group on social networking site Facebook to campaign for Event Horizon to remain in situ after the Blind Light exhibition at The Hayward closes in August. So far 182 people have joined the group.

And 32 people have signed David Porter's petition on the 10 Downing Street website.

"We are delighted that Event Horizon and The Hayward exhibition have attracted so much public interest and become a talking point for Londoners," a Southbank Centre spokesperson told the London SE1 website.

"Over 50,000 visitors have attended in the first four weeks of opening, and we hope that the exhibition and Event Horizon will attract many more visitors to the South Bank this summer."

When the sculptures first appeared on rooftops emergency services received many 999 calls from concerned passers-by and local office workers. Some callers have even reported seeing moving limbs.