I decided to go in to Reading and back out to Twyford rather than waiting for a direct train to Twyford.  (I was aware of and prepared to pay the  cost penalty of traveling this route as my season ticket expressly excludes this route).

I spotted this, face down, on platform 2 whilst approaching the train on platform 3.

(Side not: Seconds before I had a 'false sighting' by the photo booth at the exit to the Circle Line in Paddington Station.  Rather than it being a photo, it was a sticky stretchy piece of paper stuck to the ground which 'snapped' up to my fingers when I attempted to pick it up)