What is the authoritative source for Minimum Connection Time figures? The PDF timetables (which previous threads had suggested as an authoritative source) specify no non-standard connection time for St Pancras - not on table 52 (Thameslink) nor table 53 (Midland Main Line). Taken literally, that would suggest the default of 5 minutes - which is clearly not realistic for Thameslink<-->Midland Main Line (but quite reasonable for Thameslink<-->Thameslink). I called EMR to ask about Thameslink<-->Midland Main Line: they couldn't tell me(!), but referred me to brfares.com. That shows a Minimum Connection Time for St Pancras at 15 minutes, which seems sensible for Thameslink<-->Midland Mainline, but grossly too long for Thameslink<-->Thameslink. While brfares is a great resource, can anyone suggest closer-to-the-source documentation available on the internet?