My brother saw them heading up the A1 this morning. Which coaches are expected to be withdrawn?

Also photos of the London ECW Olympians are available on my Flickr - https://www.flickr.com/photos/gjm-photog...6998/page3
I have photos of the following:
9024 - C24CHM (which I also managed to get a ride on in service)
9046 - C46CHM
9056 - C56CHM
9058 - D258FYM (This was renumbered to 9258)
9065 - C65CHM
9247 - D247FYM
9258 - D258FYM (Renumbered from 9058)