London flat ‘sells for £140m’ to become the city’s most valuable property

One Hyde Park penthouse believed to be taken by overseas buyer, ‘injecting new vitality’ into capital’s super-prime market

Curators may be sceptical but branding is vital for museums

The Tate and British Museum are among institutions that have adopted brand thinking – taken seriously, it can help our scholarship reach more people

How did Alexander McQueen’s Savage Beauty become fit for a princess?

From its starring role in the Duchess of Cambridge’s tour wardrobe, to a forthcoming retrospective at the V&A, the McQueen brand is riding high. So how did a label known for avant-garde fashion become the duchess’s go-to supplier of elegant pastel outfits?

Are lab-grown gems the key to a sustainable diamond trade?

Long plagued by ethical and environmental abuses, the diamond mining industry now faces a new challenge: safe, sustainable man-made gems