I think its about time that London Underground to be extended to South West London and of course stopping at Surbiton, this would make Surbiton more appealing for buyers and shoppers only strengthening the economy and for current residents to get to surrounding ares more easily.

I've put together two ways, Route One: The extension of the District Line from Richmond. This could be built as an underground tunnel:
From Richmond > Ham (for Ham House & Gardens) > Kingston > Surbiton > Hook Parade (for Chessington World of Adventures Resort).

OR