Frasers Hospitality has bought boutique brands Malmaison and Hotel du Vin in a deal worth £363 million.
The Singapore-based hotels and apartments operator, a subsidiary of Frasers Centrepoint Limited, has acquired the 29 hotels from an affiliate of KSL Capital Partners.
The two brands number 29 hotels in cities across the UK, including London, Manchester, Liverpool, Leeds and Birmingham.
The acquisition means Frasers Hospitality will double its room stock in Europe to around 4,000 guestrooms and will expand the company's portfolio to 129 properties in 77 cities worldwide with 21,100 rooms.
Lim Ee Seng, group chief executive of Frasers Centrepoint, said: "[Our] strategy remains focused on achieving balanced growth across asset classes and diversifying our earnings profile.
"This acquisition is important as it doubles our offerings in Europe to about 4,000 keys and it propels Frasers Hospitality to be one of the leading hospitality players in this market."