Thank to you for clarifying your point. So mostly DC connected services, guessing the Milton Keynes would be included too?
Can't comment on the MK service as I don't really have experience of that service. (Apart from picking up a feeling on here that it's pretty unreliable!).
Yes they sign on during the day however those signing on at various parts of during the day are less critical. You mention early turn staff coming to work being late means less trains or closed stations. However those that come in during the day will have more advanced notice generally (sudden events like tree on the line not withstanding)and the ability for those on duty to cover for a small period as generally front line staff don't do maximum hours. So those signing on at various times will have less impact on the service as a whole.
Sorry but this is complete nonsense.
As regards drivers, you have a finite number of duties to cover, and a finite number of spares available. Remember LU drivers don't do overtime, except to get the train out of the way in an emergency. Once spares are used up, that's it. The only other option available is to get crews in from another depot, if they're not already tied up.
As regards stations, it's not a case of staff covering. The minimum numbers required vary through the day, and are non-negotiable for safety reasons. So as the minimum numbers go up, for example for the evening peak, you need extra staff. You can't ask someone to stay on who's not there in the first place!
The basic point is that LU, like every other business in London, relies on reliable National Rail services to get staff to where they need to be, when they're needed.
I've seen DC trains run later than 2200 on the DC networks
This must get an award for being the most pointless statement ever!
Your asking me to guarantee what a company will do for ever more? You realise that impossible to guarantee right?
No, but it's interesting to get an "insight" as to what happens now.
And it makes promises about future Thameslink reliability meaningless if we don't know how contingency arrangements will work.
Generally as the situation at present is there isn't first/last trains of the day for the Bedford to Brighton (well Three Bridges) services with some of these all night services not having fresh on drivers but drivers towards the end of their shifts which could be considered first/last trains. However first/last trains to say Brighton has drivers from Brighton depot meaning any issues and trains can be turned around.
Okay, so the first trains *may* be able to be turned round and sent back towards origin. After that it will depend on how the driver duties are diagrammed.
Meanwhile, how timely! Right now, on Thameslink's own live running page:
"Major disruption between London St Pancras International and Elephant & Castle expected until the end of the day
A fault with the electric third rail between London St Pancras International and Elephant & Castle means that trains will be unable to run between these stations until approximately 13:30. "
Will be interesting to see what effect this has on the service.