The Furthest Distance on a £1.50 Bus Hopper

Hugo's here! Which means its BUS FUN times, and using the Bus Hopper fare (unlimited bus and tram travel in 70 minutes) he'd devised a route which should let us take a bus, tram, bus and travel for 26 miles across London, for just £1.50! Is it possible? Would we make it? We started in Orpington ...
Thanks to Hugo @theorangeone for his busisstance!
More on the TfL Hopper Fare: tfl.gov.uk/far...
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