Ian Snowdon wrote:
Some weeks ago someone asked about the purpose of the concrete structure
near the CTRL bridge across the ECML leading into St Pancras. As I was
visiting the station I asked and was told that it is called the "Forward
Incident Control Point".

On the same subject - why is that bridge covered? Seems no need to have
a tubular bridge especially when it's just outside the entrance to a
very long tunnel