Entries at the Milan Sushi Awards earlier in the year (image by Thomas Lu, licensed under Creative Commons Attribution 2.0)

Working at Greenpeace often means that I find myself in some unusual places - inside a nuclear power station, atop an aeroplane or in a palm oil factory. But I certainly never expected to find myself at an international sushi awards ceremony.

Catch them while you can - endangered bluefin tuna © Greenpeace/Gavin Newman

When we said a few weeks ago that customers of the Nobu chain of high-class sushi restaurants wouldn't be aware that the bluefin tuna being served there was endangered, we never thought they would respond to our complaint in quite such a literal manner. But now diners can clearly see which dishes include tuna from endangered stocks because it's written on the menu. As reported in the Sunday Telegraph and as a result of Greenpeace's investigative work and subsequent discussions with Nobu, customers at the up-market eatery will now be able to clearly identify the endangered species on the menu.

The Sunday Telegraph reports this morning that, thanks to Greenpeace investigative work*, we now know that London’s Nobu restaurants, among the capital’s favourite celebrity hangouts, are serving up endangered bluefin tuna as sushi.