Arthur Figgis wrote:
Mizter T wrote:

I hadn't entirely realised there was an LGV style 'black-out' period
during the day (though that's not the right term but I forget the
correct one) on HS1 at the moment.

It is called the white period, I think.

Seems to me that on HS1 it's called the "daylight track inspection".

Philip.