The extension of a luxury London hotel by Richard Rogers is nearing completion.

The renowned architect, and his practice Rogers Stirk Harbour & Partners, have designed a fresh architectural appearance to the front façade of the Berkeley hotel in Knightsbridge, adding “a touch of contemporary theatre” to the 1970s building.

The hotel’s entrance is being extended outwards and fitted with glass, steel and carbon fibre beams to create what the hotel’s developers describe as “a unique and show-stopping canopy which will take our London landmark into the 21st century.”

Meanwhile, interior designer Robert Angell has redesigned the hotel lobby with soft timber panelling intended to create a sense of occasion and arrival.

Angell has also reimagined the hotel's Blue Bar, originally designed by David Collins, and the Collins Room where the hotel serves afternoon tea. Both spaces have been increased in size and will receive more light due to the glass extensions. Angell's new scheme for the Collins Room will incorporate pale marble, mirrors, silk walls and custom-made upholstery weaves.

The Berkeley is managed by Maybourne Hotel Group, who also manage Claridge's and The Connaught in London’s Mayfair.

The cost of the extension has not been revealed. The official unveiling of the project is scheduled to coincide with the beginning of the British summer.