Upvote:0
I have taken the tour myself earlier this year or possibly last year, but not a lot longer than that.
So I am sure I also embarked on https://www.google.de/maps/place/Embankment+Pier/@51.5064323,-0.1239947,17.25z/data=!4m14!1m6!3m5!1s0x48760520cd5b5eb5:0xa26abf514d902a7!2sBuckingham+Palace!8m2!3d51.501364!4d-0.14189!3m6!1s0x487604c91cc3decb:0x7ed2cc59c37c8df6!6m1!1v8!8m2!3d51.5072884!4d-0.1211661.
It was kind of a "regular" ferryboat.
Upvote:1
As others have said TFL do not operate any river boat services in London. MBNA Thames clippers operate regular scheduled services which can be paid for using the oyster/contactless system but are outside of the TFL fare structure (so any caps don't apply). MBNA do offer an app using your phone's GPS explaining the sites along the river: https://www.thamesclippers.com/visitorapp it time of writing it is free to use but currently iPhone only. The app will also not work unless you have some headphones for your device.
Otherwise there are numerous boat tours which are aimed at sightseeing, one list of these is at: https://tfl.gov.uk/modes/river/about-river-tours#on-this-page-1 (thanks to @Calchas in the comments for this link)