go to the Moving Target forum (which I assume you know about if you are wanting to film London bike couriers) and tread carefully. Couriers as a rule dislike media as they are usually negatively represented (loads and loads and loads of people always want to do 'little pieces' on couriers) and this often leads to a negative response at first, especially as there are a number of people in that community who spend a lot of time an effort getting couriers to be portrayed in a better light and be less exploited than many of them are.
Outline your motivation clearly and maybe make a donation to the London Bike Messenger Association (which I aslso assume you know about due to your interest in couriers)
go to the Moving Target forum (which I assume you know about if you are wanting to film London bike couriers) and tread carefully. Couriers as a rule dislike media as they are usually negatively represented (loads and loads and loads of people always want to do 'little pieces' on couriers) and this often leads to a negative response at first, especially as there are a number of people in that community who spend a lot of time an effort getting couriers to be portrayed in a better light and be less exploited than many of them are.
Outline your motivation clearly and maybe make a donation to the London Bike Messenger Association (which I aslso assume you know about due to your interest in couriers)