Not if the station's importance were increased because of this. The odd East Coast service stopping there wouldn't be too outrageous - the distance between it and the stations that would be on the route either side are par for the course on the southern ECML.
Won't happen - for the same reason that West Coast services won't be stopped at Bletchley once EWR is up and running.
The simple fact is there are already 2 southern 'railheads' for East Coast services - Stevenage and Peterborough.
Sandy is 3 stops from either.
With West Coast they will continue to use MKC for such stops and not bother with adding Bletchley in.
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I'm concerned that we won't get to see the actual report until May. Last year I put in an FoI request when they had narrowed it down to two options. NR rejected my request on the basis that they would be publishing the report in "early 2016". I don't regard May as early 2016 and I'd be surprised if May doesn't turn into June or July.
I fear that they are ignoring the fact that EWRL is part of a network, not sone isolated line. Sandy will offer very poor interchange with ECML. Hitchin or Stevenage would be much better.
Sandy is fine as an interchange - and from a journey time perspective for Bedford - Cambridge it's easily the best option.
As I've pointed out before, if you were to go via Hitchin you'd be looking at circa 20 mins to cover Bedford - Hitchin and circa 25 mins to cover Hitchin - Cambridge.
Via Stevenage would be even worse as you'd be looking at circa 20 mins to cover Bedford - Luton another 20 mins for whatever new line you'd need from Luton - Stevenage and then 35 mins from Stevenage to Cambridge.
Both of those journeys would be slower than the current Stagecoach X5 coach is.
Whereas the via Sandy option is about 30 miles as the crow flies - on an
average speed of 60mph you'd cover it in 30 mins - which is entirely viable given a current Hitchin - Kings Cross service (which is pretty much 30 miles) with 2 stops (Stevenage & FP) is timed for 32 mins.