Booking RTW online

Where can I book a RTW fare oneline or do I need to speak to a person?

I am looking for London, Shanghai, Los Angeles, London.

Any advice would be welcome.

Thanks

It might be cheaper to do PVG return then LAX return unless you really are in a hurry and keen on flying East from PVG.

Phil

Most RTW fares have to have a stop in Oz/or NZ. Would it be better to have an openjaw?