Sahara Chairman Subrata Roy arrives at the Supreme Court in New Delhi, India.

India's Supreme Court has given detained tycoon Subrata Roy permission to leave prison for a few hours a day to negotiate the sale of three trophy hotel properties, including the Grosvenor House in London.

Mr Roy was arrested earlier this year for contempt of court, after failing to turn up for hearings in a long-running battle between his Sahara group and the Securities and Exchange Board of India (Sebi), the market regulator.