There used to be a classic website up about 2 bike couriers cycling round Asia on thier track bikes, the website was 2bikesinasia.com. They seemed to manage fine in the hills of north Thailand and Vietnam although they were hitching lorries on the way up. I reckon they were very very good cyclists though they both had been couriers for a long time, my brother met one and he was bunnyhopping 80cm on a track bike with drop bars.
Personnaly I would use gears though unless your used to riding all the time and going up long hills, the hills in London are tiny and hardly really count.
There used to be a classic website up about 2 bike couriers cycling round Asia on thier track bikes, the website was 2bikesinasia.com. They seemed to manage fine in the hills of north Thailand and Vietnam although they were hitching lorries on the way up. I reckon they were very very good cyclists though they both had been couriers for a long time, my brother met one and he was bunnyhopping 80cm on a track bike with drop bars.
Personnaly I would use gears though unless your used to riding all the time and going up long hills, the hills in London are tiny and hardly really count.