solar penguin wrote:
When the Kent services start, it would be nice if
_all_ the High Level platforms could be numbered from 1 to [whatever],
in order.

That is the intention - otherwise the 'Interim' platforms (which were
operational between 12 April 2004 and 14 July 2006 inclusive) would not
have been labelled 10 to 13. During the Thameslink blockade (11
September 2004 to 15 May 2005 inclusive), platforms 8 and 9 were also
brought into use.

snip