Out of interest what was this movement?
Acton - Euston - Watford - Euston
http://www.realtimetrains.co.uk/train/O43554/2013/12/11/advanced
Then Euston - Marylebone
http://www.realtimetrains.co.uk/train/O43555/2013/12/12/advanced
Just done Marylebone - Aylesbury
http://www.realtimetrains.co.uk/train/O43556/2013/12/12/advanced
RHTT?
Acton - Euston - Watford - Euston
http://www.realtimetrains.co.uk/train/O43554/2013/12/11/advanced
Then Euston - Marylebone
http://www.realtimetrains.co.uk/train/O43555/2013/12/12/advanced
Just done Marylebone - Aylesbury
http://www.realtimetrains.co.uk/train/O43556/2013/12/12/advanced
RHTT?