Paul Corfield wrote:

[snip]

Nice to see Saturday services back to x15 after being hacked back to x20 when One took over.

I don't remember the Saturday service being 15-minute intervals before
now in the 20 years I've been using the line - I'm pretty sure it
hasn't been in that period, as I use the line a fair bit at weekends. I
don't have any great desire to stick up for One, but I think this may
be a little unfair on them!

The 15-minute interval M-F service was implemented around 8-10 years
ago I would guess. Until then 20-minute intervals applied M-S daytime,
30-minute intervals after approx 19.15. M-F peak services varied from
year-to-year, typically around every 12-15 minutes.

Around 15 years ago a few ran fast from Liverpool Street to Walthamstow
St James Street in the evening peak, and I think v.v. in the morning
peak. I don't remember this lasting for more than one timetable though.

I believe Sundays have always been 30-minute intervals throughout the
day. Around five years ago there was a bus service regularly replacing
trains for whole timetable periods for various engineering works.

I can't remember what the Jazz service levels were however, and they
may well have included a 15-minute Saturday service mentioned above. I
do remember that the last remains of the all-night service (around
three trains in the overnight period) were finally removed sometime
around 1987-9.

I see from other posts that the actual implementation has been a farce.
I don't use the line very much but the improvements are a good idea -
shame they are now delayed for the best of a year due to One's
incompetence.

I couldn't agree more. The timetable was revised two weeks ago, but
rather than revert to the previous incarnation One have selectively
cancelled some services on most, if not all, West Anglia routes. The
effect of this for the Chingford line is that there are several
scheduled half-hour gaps in the daytime, utterly spoiling the idea of a
regular interval service. One of the many cancellations across the WA
network is the first train from Chingford after the morning peak
restrictions, which is a truly fantastic idea.