One of the most glamorous figures in the London art scene is the subject of a    £3 million High Court writ over allegations that she purchased two   contemporary works for a client who was unable to pay for them. 

Olyvia Kwok successfully bid for Water-Worshipper by Jean-Michel Basquiat and   Idilli by Cy Twombly at Sotheby’s. Miss Kwok runs an art and jewels investment firm for clients “who tend to be   individuals or families with a net worth in excess of $30 million” and made   her bids at the sale in February.