I was once on an HST from St.Austell to Pad ( which, incidentally, has probably never seen a Pacer ) and we suffered a broken window just after Plymouth : the conductor cordoned off the area completely 'for safety reasons' - and cordoned us off from the Travelling Chef in the process ........................ I'd not been able to get close enough to assess the damage myself but my suspicions were confirmed when a couple of guys knocked out the remains of the outer window pane at Newton and the train was allowed to proceed ...... and the passengers were then allowed to discover what little the Chef still had to offer. ( Yes, I do still think of HSTs as modern trains.)