Some Avanti shuttles were 10 cars yesterday]24th July] - see my post #194 above.With Avanti dropping their service right down and so having spare Voyagers, could TfW get them to run the shuttles as 10 car? That would help a lot and the units are not being used for anything else.
Also 3 were today [25th July]-
Realtime Trains | Departures from Rhyl all day on 25/07/2021
Train information at Rhyl all day on 25/07/2021. From Realtime Trains, an independent source of train running info for Great Britain.
www.realtimetrains.co.uk
Not additional shuttles Crewe-Holyhead, but a strengthening of those already timetabled.