I'm surprised it doesn't mention the referral system. Pretty much every Londoner I know in their early twenties who uses Uber was given an initial £10/20 (can't

I'm surprised it doesn't mention the referral system. Pretty much every Londoner I know in their early twenties who uses Uber was given an initial £10/20 (can't remember exactly how much) to spend if they referred a friend. I remember thinking at the time how much money this must cost but it clearly worked, everyone who had it was looking to give their uber code away to someone new so you could travel in luxury for free.