Can I use my Oyster on South Western Railway?

Related questions

1. What is Oyster card in London?
2. What does a travel card cover in London?
3. What is a TfL travel charge?
4. Is Walton on Thames in Oyster zone?
5. Can you give your Oyster card back?
6. Does London Oyster card expire?
7. What are the zones in London?
8. What zones are covered by a Travelcard?
9. Can I use Oyster on TfL rail?
10. Can I return Oyster card to Heathrow?

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13. #deposit
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15. #london
16. #underground
17. #overground
18. #enough
19. #national