"White shadows" reminds me of "Politik" because of the energy, the effects, the strings and, above all, the last part of the two songs: they have the same harmony in a different key; they are soft and very deep.
There's another thing about Coldplay and Radiohead: their first albums(Parachutes - Pablo Honey) were followed by much better ones! (A rush of blood... , X&Y - The Bends, OK Computer)