TfL ran a consulation during 2017 about proposals to changes to local bus routes related to the opening of the Elizabeth Line (aka Crossrail).
The proposals included making changes to routes 95, 112, 120, 266, 391, 427, 440, E1, E3, E5, E10 and H32. Plus changes to routes 140, 223, 697, 698 including introducing new routes 218, 278, 306 and X140.
Since that consultation closed in September 2017, TfL have been reviewing responses and have come up with a number of modified proposals that are now themselves open for consultation - until 12th August 2018.
https://consultations.tfl.gov.uk/buses/routes-27-and-440/?cid=routes-27-440
https://consultations.tfl.gov.uk/buses/routes-224-and-440/
UPDATE:
The response submitted by CANForum is at /news/proposed-changes-bus-routes-27-and-440