"MIG" wrote

It took me a while to work out that the daggered sentence in the key
is actually the heading for all the information below it, rather than
an independent statement. Why check before you travel when all the
information is given immediately below, or does it just mean "check
this here information before you travel" as opposed to the usual
requirement to phone up, check bulletins etc?

Possibility of confusion between years and times on the 24 hour cock:
Blackfriars Underground station closed until 2011
Cannon Street open until 2100

Peter