At Le Manoir and Brasserie Blanc we are extremely careful about sourcing all our food, but especially seafood. We don't have the problem faced by Nobu of taking bluefin tuna off the menu, because it wasn't on our menus - we do not buy or serve endangered species.

But I am as alarmed as everyone else by the documentary that has just gone on release, The End of the Line. Based on Charles Clover's book with the same title, the disagreeable facts shown so dramatically in the film are horrible. Good scientists are predicting that we will see the end of most seafood by 2048. Charles Clover says: "In UK waters, stocks of palatable fish, such as cod, have been reduced to less than 10 per cent of what they were 100 years ago. This compares with a global average of 25 per cent of stocks actively overfished."

Much of the problem is generated by the demand of consumers - but it is relatively easy to educate consumers about which fish to avoid, and even easier to eliminate these species from restaurant menus. The solution suggested by the film:

• Control fishing by reducing the number of fishing boats across the world
• Protect large areas of the ocean through a network of marine reserves off limits to fishing
• Educate consumers that they have a choice by purchasing fish from independently certified sustainable fisheries

For more information about the Marine Stewardship Council, you can visit their website by clicking here.

For more information about The End of the Line, and to watch a trailer for the film, click here.