1. You missed the question mark at the end of that.
2. You can’t get stuck in London … you can only get stuck outside London ¹.
3. There is no ‘outside London’, only Zone 3 … so you can’t get stuck outside London either.
4. You should be so lucky, you ungrateful wretch.
5. Piss off back where you came from then!

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¹ Where all the inbred morlocks eke out their tormented existence.