Thanks
I arrived at 1:11 in upminster making it 19h43m but I didn't bother logging, witness booking, or timing to the second because my route isn't going to get me round in a world record time (as you can see) so it doesn't matter about those things, does it?
I thought that when I read it, it is as if the route finishes at Aldgate via Mile End then Liverpool Street
I can't really see how else you could miss out Liverpool Street!
How about if you go from Walthamstow Central to Leytonstone on the W15, head north on the Central, return south on the Central to Stratford then pick up the Jubillee. Assuming that you cover all of the District Line and the Northern Line then it is possible to miss out those three stations.
my route finished
CIRCLE from Victoria, Embankment, etc. to Liverpool Street
CENTRAL to Mile End
DISTRICT to Upminster
but all the circle trains were being taken up to Barking from Tower Hill (i think i missed the last one to liverpool street) so I just continued up to Upminster.