I spent 90 mins tinkering with the Brompton. Located broken spoke, removed rear wheel, deflated tyre, turned tyre-levers into pingfuckits as the Schwalbe fought back, replaced broken spoke, rounded the flats on the cheese-flavoured spoke nipples, put it all back together (noting how loose and sloppy the hinge was in a lateral direction), scraped mud off, cleaned, cleaned, cleaned, cleaned, pumped rear tyre.
All to turn a 8-minute walk to the bus stop into a 2-minute ride. For a bus that was 15 minutes late.