When Patricia Cornwell was interviewed by Diane Sawyer on the television show "Prime Time" in 2001 shortly before the release of her book "Portrait of a Killer," Sawyer's narration of the piece included mention of materials housed at the "Sickert Museum," as an ornate white stone building along some London street was shown. I'm visiting London in a couple of months and have tried to track down online where this museum is but as far as I can tell from what I can find there doesn't actually seem to be any such place. Searches on the term "Walter Sickert Museum" reveal various museums here and there where his art is displayed but none devoted to him exclusively. Can anyone clarify this?