My advise is finish your a-levels and go to university. You can ultimately cycle to a well paid job. However, you may well hate yourself when you sell your soul to the man. PS I just watched that Dave Gorman documentary. I am not a courier but enjoy bikes and riding plenty. When you live in London the trick is to attempt to buy a house, when you have one you are so far from the centre this is plenty riding for anyone and the shit public transport forces you to cycle even when you are knackered.
My advise is finish your a-levels and go to university. You can ultimately cycle to a well paid job. However, you may well hate yourself when you sell your soul to the man. PS I just watched that Dave Gorman documentary. I am not a courier but enjoy bikes and riding plenty. When you live in London the trick is to attempt to buy a house, when you have one you are so far from the centre this is plenty riding for anyone and the shit public transport forces you to cycle even when you are knackered.