Work as a cycle courier

100miler/day with GLH seriously?? Maybe his ODO is off.
I say BS.

I worked for one of the most busy outfits out there and even then business was dead. The max mileage for a small town like London is in the region of 70-80 miles/day which was what I was doing. But don't expect to hold even this mileage for 365 days of the year because that's impossible.

Bit of a dredge but..
Riders in Cardiff end up doing 100mi days every so often, depends on the rider. Cardiff is town compared to London. It could be down to the fact that there's only two groups couriering here and they sometimes ride out to nearby cities.