"MIG" wrote in message
oups.com...

Some peak trains are scheduled to stand for several minutes at
Blackfriars. Also, as someone said, it's travelling at walking pace
and generally waiting so long at every station that takes up the time.

I think this is a deliberate attempt to avoid transferring delays between
the northern and southern sections of the route, and to ensure that
southbound trains arrive at Borough Market Junction on time. When (if?) they
get round to giving Thameslink its own path through London Bridge it should
be possible to speed things up a bit.

D A Stocks