"D7666" wrote

through the core - 24x12=288; (20*12)+(4*8)=256; 256/288=0.888888etc.

ITYF it should be 272, so a reduction of a little over 5%.

Thus it is very important to understand this issue, and very important
they get it right.

Exactly.

The Catford Loop stopping service only gets 2 tph in the evening peak (plus
one extra shoulder peak train), so it will be difficult to justify the cost
of extending platforms at these stations, especially as Elephant & Castle,
Peckham Rye, and Bellingham (if the sidings are retained) look difficult to
extend to full 12 car.

Peter