Are Govia Thameslink Railway the TOC with the highest percentage of timetabled services running from Monday vers what they'd run prelock down on a Monday or is another TOC running at a higher percentage level?
On paper London Underground is now attempting a 100% service on most lines, although with varying amounts of on-the-day cancellations, and of course no overnight service.
LU does have the advantage that with a metro service random cancellations aren’t really a problem for much of their network, whereas the less frequent the service the more important reliability becomes.
GTR have been pretty good on the GN and TL sides to be fair. What they have planned has been fit for purpose, and what they have promised has been reliably delivered. The Saturday service with peak extras is possibly a wise way to do things, as presumably it gives the scope to focus on the core Saturday service and then make the peak extras the first choice for cancellations if resources aren’t available (although to do that you need to have good management/staff relations to allow juggling to happen).
It’s worth noting that GTR is *not* running a full MF service, but a Saturday base service with extras added to mirror elements of what would happen on MF. They of course have the luxury that the Saturday base service provides identical train lengths to what would happen MF.
Taking Hitchin as an example, I think the 700 service is now 100% (albeit 1tph terminating Royston vice Cambridge) and there will now be 3x up 365 services vice 6x, and 3x down 365 services vice 8x. So a net shortfall compared to normal of 24 carriages to London in the morning peak and 40 carriages from London in the evening peak and early evening.
I haven’t looked to see what they’re doing on the fast Cambridge services, as the base Saturday service is more geared to day trips to London and Cambridge rather than commuting in terms of train lengths (there were some oddities earlier in the lockdown when 4-car trains were working some services at busier key worker times, and then 12-car trains at times when literally no one was travelling - although with the very low numbers this wasn’t really an issue, more of a curiosity).