On Dec 18, 1:01 am, Andy wrote:

I've still not quite worked out the rationale behind the Wembley Park
stops during the peak, as the pattern seems a bit inconsistent

AIUI it is related to Met. - Jubilee interchanging with Wembley Park
relieving Finchley Road. If all passengers requiring interchange had
to do this at Finchley Road dwell times of both lines would increase
and/or platform overcrowding would occur at FIR. Yes I am aware there
are both busier and less well laid out interchanges - but if there a
way to provide some relief where possible it is better to do so for
all round journey flexibility.

--
Nick