The Dezeen team is reporting live from London Design Festival, which takes place 14-22 September. Read on for all the coverage from the preview day ? 13 September.

 
5:00pm ? lightweight luxury
As the day draws to a close, Tom Ravenscroft got his hands on the world's lightest glass whiskey bottle.
Photo by Tom Ravenscroft
Created by drinks company Diageo for its Johnnie Walker Blue Label Ultra whisky, the bottle weighs 180 grams ? less than an iPhone. By reducing the amount of glass in the bottle, the brand also reduced the amount of carbon used.
"We thought, what if our luxury products, instead of being in the heaviest glass, they were in the lightest and they celebrated beauty and delicacy"" Diageo global design director Jeremy Lindley told Dezeen. Photo by Tom Ravenscroft
According to Lindley the company worked with glassblowers and took a "test-and-learn" approach to develop the bottle's final form.
To mark the launch, art collective Marshmallow Laser Feast created an installation from the failed glass bottle prototypes that were hung from ceiling at the Old Selfridges Hotel in Mayfair.
Named Liquid Light, the installation was designed to symbolise the evolution of the bottle's form over time.
Photo by Tom Ravenscroft

 
4:00pm ? tea for two
Quick break at Fortnum and Masons for high tea.The Dezeen team can highly recommend!
Photo by Tom Ravenscroft

 
3:30pm ? window shopping
An array of sculptures made from materials such as ...