Considering their location in the middle of Tottenham Court Road, these discs were in surprisingly good condition. Why was the labelling so thorough for the Imation disc, but non-existent for the other?
Tottenham Court Road is visible through the Datawrite disc itself. Who or what is "RN 657"? I was nearly run over while taking these pictures in the middle of the road on the way to work. Unlikely to play.
Just down the hill from the tube exit is a block of flats with a small front garden, where I found this Nintendo disc. According to Wikipedia, "Sonic Heroes" is a videogame whose story "follows the journeys of four individual teams of three on their search for the mad scientist Doctor Eggman. However, Sonic the Hedgehog's clone and nemesis, Metal Sonic, is secretly manipulating the game's events in a plan to eradicate his long time foe." Unlikely to play.