Starwood Capital is rumoured to be in negotiations to buy Hilton's package of 11 hotels for about £120m.
The US property investment firm would not confirm or deny the reports, but a spokesman admitted the company was looking to "aggressively grow" and increase its presence in different market sectors.
Starwood Hotels & Resorts owns the Sheraton, St Regis and Westin hotel brands.
Hilton recently announced it was putting £200m-£300m worth of additional property up for sale.
Hilton would not reveal which new hotels were being put on the market, but it is believed that they could include the London Mews and Edinburgh Grosvenor hotels.
by Emily Manson
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