Also on the Grain branch, HS2 concrete segment trains are now running from Grain to West Ruislip, as mentioned in this thread -
https://www.railforums.co.uk/threads/hs2-freight-west-ruislip.242816/
These are using FBA (formerly British Gypsum KFA) and FEA intermodal flats fitted with modules that allow segments to be be loaded in a similar fashion to the Tallington - Grain service that finished last year.
Incidentally, 12 of the FCA wagons previously used on the Tallington service were moved empty from Tallington to Scunthorpe as 6E21 early on 4th February, hauled by 66117.
Loaded segment trains ran from Grain to West Ruislip on 26th, 28th Jan and 4th Feb, with the empties returning to Grain on 28th Jan, 3rd February and 6th Feb (66301 has just departed the siding at West Ruislip).
Empties run as 6O82 08:12 West Ruislip - Grain (via Neasden Jn, Kew East, Clapham Jn, Wandsworth Road, Nunhead, Lewisham, Barnehurst, Dartford)
The loaded train runs as 6M82 19:29 Grain - West Ruislip (via Sidcup, Lewisham, Wandsworth Road, Kensington Olympia, Acton Main Line, Greenford)
I've not seen a photo of the loaded train (which obviously runs in darkness at the moment) but here is a photo of the empties hauled by 66726 -
https://www.flickr.com/photos/locohunter/52662638687