If you offer Nedd Brockmann a coffee, he will only accept it if he can drink it from a dine-in mug.
The reason he hasn't used a disposable coffee cup or a plastic water bottle in five years is the same reason he hasn't taken the lift in four.
Only this month, he hauled a heavy bike bag up the stairs at London's Heathrow Airport rather than breaking a promise he made to himself.
