I was actually booked to travel on the 2325, but I was at Euston ridiculously early (blame Rory Bremner rushing through his show in order to catch the sleeper), and was sat outside enjoying the music coming out of Ed's Diner around 2220 when I noticed both the 2225 and 2325 delayed.
Then not knowing what the problem was I asked if I could travel on the 2225 given my train also showed delayed, the TM at the time said we may not leave before 2325 anyway so allowed travel. As it happens we only departed 14 late, and the 2325 may end up being unit-swapped or even cancelled altogether if it was to be formed of the incoming 1B83.
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I am informed the unit was 390002.
Can anyone confirm this was to form 1G70, the 2325 which hasn't left Euston yet?