The Design Museum is a museum in Kensington, next to Holland Park, which covers product, industrial, graphic, fashion and architectural design. There is also a nice cafe on the 1st floor with beautiful views of the park.
An unassuming glass door on an otherwise plain facade hides a cavernous space, with high ceilings and huge sliding partitioned walls producing excellent exhibitions in a space you'll want to go back to.
The most amazing little shop selling natural, organic preserves by the wonderful Lillie O’Brien (ex St John Bread & Wine pastry chef). Super friendly staff and insane jam doughnuts!