Clearly he was making a stand against the use of fast food outlets near by
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Just one thing I don't get, the report says, "The train was in Preston Station, where it was being cleaned before it was due to travel from Lancaster to London", but why was it at Preston if it started at Lancaster? Surely it would have been cleaned at the depot (as this was early morning), and if it had stopped at Preston (possibly to make way for in service traffic or where the onboard crew boarded) it would not have unlocked all of the coaches, just one for the crew to jump onboard, where he would then have been spotted.