The building was designed by Richard Norman Shaw, and it was the first portion of the great scheme for the rebuilding of Piccadilly Circus and the Quadrant of Regent Street to be realised.

[3] In 2019, APG and GIC bought out Host's share, forming Archer Hotel Capital.

The hotel left the Marriott chain on 26 November 2020,[4] and it was subsequently renamed The Dilly London.

[5] The hotel has a health club with an indoor swimming pool, steam room and massage facilities.

One of the hotel's two restaurants is Terrace at The Dilly, a botanical oasis with views overlooking Piccadilly.