Bletchleyite
Veteran Member
Sunday morning it isn't. I see seven day as being a SX all week.
SX all week doesn't make sense. Weekday peak extras for example would be carting fresh air if they operated on a Sunday. Yes, you could do it all by way of train lengths, but it would result in a lot of overcrowding. And your high demand period out of London on regional services on a Saturday is a bit earlier than weekdays.
I think I'd just concentrate on the main issue being the need to move to a proper 7 day shift pattern for staff so we don't end up with nonsense like Northern at present, and we don't have any lines without a Sunday service entirely because that belongs in the 1970s when Sundays weren't a shopping day.
To me the base WCML service is probably what you want on a 7 day railway, then you build extras on top of it. That would probably be a lower base than the present one - say hourly Liverpool. hourly fast Scotland, 2tph (half hourly*) Brum, 2tph Manc (one via Crewe, one via Stoke, the faster of the two getting the MKC stop). Then you build extras on top of the base "Takt" based on demand, ideally up to 4tph in the high peak (the high IC peak being away from London Friday evening, towards it Sunday afternoon". Or on the local services it'd be the MKC stopper, the Brums and the Crewe, with the Tring semifasts laid on top as needed.
Yes, oddly enough this is what SBB does!

The late start of the Sunday shopping day is also relevant.
* Ideally similar running times, but it's hard to get it bang on because there are 3, not 2, key intermediate stops on the south WCML. So I'd probably go MKC in both, Rugby in one and Watford in one to balance it to close to half hourly at most points. Though pathing constraints may influence what can be done here.
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