Possible Clues:

• Royal attendants bemoan banking eastern money
• Following on, batting to open the day
• People following some mobile unit, erroneously sent up
• Soldiers can use empty train
• European element occupying Parisian street as a set of followers?
• Uniform carried by entire travelling entourage
• Train reversing into mobile unit, erroneously
• Train bird to accept one sent back
• Regret seizing film in train
• Followers reunite abroad