The bid for Charles Darwin’s workplace and home to become a World Heritage Site has yet to be sanctioned by Unesco.

The World Heritage Committee deferred the decision to put Darwin’s Landscape Laboratory on the list of Unesco World Heritage Sites because it wanted to study the nomination in more depth.

The site in the London borough of Bromley includes Darwin’s House, the garden where he conducted experiments and the countryside surrounding the property. It is managed by English Heritage.

The Department for Culture, Media and Sport (DCMS) nominates UK sites for world heritage status.

Culture secretary Jeremy Hunt said: “While this is disappointing for those involved in the nomination, the committee’s decision has given the bid partnership the opportunity to revisit this nomination and to look at ways in which the case might be strengthened for renomination.”

The site was first nominated in 2006, although the application was withdrawn the following year after Unesco adviser, the International Council on Monuments and Sites, cast doubt over the property’s significance as a scientific heritage site. The DCMS submitted a revised nomination in 2009.

The government plans to nominate the Twin Anglo-Saxon Monastery Wearmouth-Jarrow in January for consideration by the World Heritage Committee in summer 2012.

Image: Down House, Charles Darwin’s home for 40 years