Huh, a couple of days ago that website said booking required and booking closes 9pm on Saturday. Doesn't say it now, so I clicked through to the reservations link just to check. Which says
Booking is now closed.
Maybe it's only open for a 24 hour window, from tomorrow evening? Or is it booked out?
they're allowed on the ips - lon route?
yeah, it's the local trains which won't take bikes, which makes some sense as Darsham is hardly setup to accommodate 1000 bike riders into Ipswich.
50 per half hourly train Ips to Lst, which is a lot more than is carried at any other time on any other route I'd guess...
https://www.abelliogreateranglia.co.uk/travel-information/service-alterations?details=2070&month=7&year=2016