Can anyone please answer the following please:
The London Midland Region often had 4-track mainlines, with "fast" on one side and slow on the other (rather than slow lines flanking either side of the fast lines, as in the ex-LNER region).
Were the slow lines exclusively used by freight, or was it usual for stopping passenger trains to also use the slow lines as well. if the former case, would stations only have had platforms for the fast lines only?
Thanks in advance.
PETER