Even with the fast walking, they seem to have employed a slow walker to measure this. My walk to work I can do in 35 mins, which isn't at a terribly fast pace,

Even with the fast walking, they seem to have employed a slow walker to measure this. My walk to work I can do in 35 mins, which isn't at a terribly fast pace, but even TfL's fastest option reports it as taking 44mins http://www.tfl.gov.uk/plan-a-journey/results?IsAsync=true&JpType=publictransport&From=n1+6hq&FromGeolocation=&ToGeolocation=&ViaGeolocation=&To=se1+2xb&TimeIs=departing&Date=20140328&Time=1445&Via=&NationalSearch=false&JourneyPreference=leasttime&Mode=tube&Mode=bus&Mode=dlr&Mode=river-bus&Mode=tram&Mode=cable-car&Mode=overground&Mode=national-rail&Mode=coach&AccessibilityPreference=norequirements&WalkingSpeed=fast&MaxWalkingMinutes=40&CyclePreference=AllTheWay&SavePreferences=false http://www.tfl.gov.uk/plan-a-journey/results?IsAsync=true&Jp...