It's an outdoor exhibition of sculptures by Peter Logan (Andrew Logan, his brother, organised the Alternative Miss World at the Campden Roundhouse, and was Time Out's pick of the week a month or so ago). Peter is very well established and has works in the Tate Collections and the Arts Council Collection. In the past he's exhibited at the Whitechapel Gallery, the Hayward Gallery, the Tate Gallery and all over the world. His work is also in major corporate collections such as WHSmith, GlaxoSmithKline, Grosvenor Estate holdings and BAA (Stansted airport).
The attached press release gives all infomation. But essentially, it's in the gardens of Fulham Palace, admission is free and it's open pretty much every day of the year, until June 2010. The gardens and Palace themselves are stunning, well worth a visit and have recently been renovated.