Do you know which services on the Nottingham side are booked 2 car? I know which ones to avoid mostly but it would be good to receive confirmation
07:49, 11:19, 13:19, 15:19 and 17:39 from Birmingham New Street - note the 17:39 terminates at Derby, runs ECS to Birmingham and forms the 20:22 to Cambridge
07:45, 09:45, 16:45, 18:45 Cardiff Central to Nottingham
06:00, 07:04, 09:41, 11:41, 13:10, 13:41, 15:10 & 17:10 departures from Nottingham (you're probably aware xx:10 are Cardiff services, xx:41 are Birmingham).
The 4-car diagram is the 07:04 Nottingham - Cardiff, 10:45 Cardiff - Nottingham, 14:41 Nottingham - Birmingham, 16:19 Birmingham - Nottingham, 18:10 Nottingham to Cardiff, if anyone's interested
My source for these is a station working book for Birmingham New Street, covering early 2015, and obtained by an FOI request by someone else - very little has changed on the Nottingham & Stansted routes in that time period so these are likely to still be accurate. As ever substitutions can occur, particularly the 17:39 New Street - Derby which can be a 220.