The unused Millennium Pier at North Greenwich is to be reopened next
summer to serve an expanded Thames Clippers ferry service."

And

"The company is negotiating with Transport for London to get the
service included in the Oyster card scheme, although no agreement has
yet been reached."

Sounds promising, though I suppose they could just mean that the
Clipper fare could be deducted from pre pay, rather than being able to
use a Travelcard

Rob