Barrington-Coupe himself claimed to have sold 3,051 Hatto CDs in 2005 and 2006, and 5,500 from 2007 up to February 2009, and that he had made a "thumping great loss" on them. Hatto died from ovarian cancer and deep vein thrombosis at her home in Royston, Hertfordshire, on 29 June 2006. She was cremated in Cambridge on 11 July. In February 2007 it was announced in a series of articles in "Gramophone" and on the magazine's website, after the editor, James Inverne, had commissioned an intensive investigation by the audio expert Andrew Rose and others, that the CDs ascribed to Hatto had been discovered to contain copies, in some cases digitally manipulated (stretched or shrunk in time, re-equalised and rebalanced), of published commercial recordings made by other artists. While some of these artists were well-known, the majority were not. When Brian Ventura, a financial analyst from Mount Vernon, New York, put the recording of Liszt's "Transcendental Études" credited to Hatto into his computer the Gracenote database used by the iTunes software identified the disc, not as a recording by Hatto, but as one by László Simon. On checking online samples of the Simon recording Ventura found it to be remarkably similar to the version credited to Hatto. He then contacted Jed Distler, a critic for "Classics Today" and "Gramophone", who had praised many of the recordings ascribed to Hatto. Distler has said:  An identification of the source of another recording, which had been in preparation for some months, was released the following day by the AHRC Research Centre for the History and Analysis of Recorded Music (CHARM, based at Royal Holloway, University of London) as a by-product of research on performances of Chopin Mazurkas. Within a week of the initial story being posted on the "Gramophone" website on 15 February, the sources for some 20 of Hatto's Concert Artist CDs had been identified. On each of the concerto recordings published in Hatto's final years under her name the conductor's name was given as "René Köhler", and Barrington-Coupe provided a detailed biography for "Köhler". The information given there has not withstood careful scrutiny. The conductors whose work is represented on the concerto recordings credited to Hatto and Köhler are now known to include Esa-Pekka Salonen, André Previn and Bernard Haitink, while the orchestras, claimed to be the National Philharmonic-Symphony and the Warsaw Philharmonia, are now known to include the Vienna Philharmonic, the Philharmonia, and the Royal Philharmonic.