Famous figures of society or stage , including Mrs Bryan Guinness , Miss Virginia Woolf , Miss Greta Garbo , Mr Osbert Sitwell and others , have had their features perpetuated in mosaics by Mr Boris Anrep , the famous artist who is responsible for mosaic designs on the floors of some of London ' s most famous buildings . The work , now almost completed , covers a great floor space in the National Gallery , London . The features are easily recognisable . All the personalities portrayed are personal friends of the artist . Mr Boris Anrep (right ) with an assistant at work on the mosaics in the National Gallery , London . 14 June 1933