Have found out today and yesterday that you can actually book bike reservations without buying tickets.
Which isn't that much use, but it is of limited use as you can book the bike reservation first and
then book the ticket online, rather than having to pay first.
The train booking systems are completely dumb however. For instance GWR's website although it does seemingly have the bike option (it's obviously East Coast's old software with different style sheets) doesn't seem to cater for the situation where a bike reservation is necessary but seat reservation isn't possible. e.g. inverness to edinburgh.
It's also pretty dumb how asking for a bike res for a through journey inside a station produces a journey with a different changing point, to if you request that same journey online! And there's no way to force it to change at a specific station. e.g. if you want to go from INV to NNG, it wants me to change at York. If I want to change at Edinburgh, I put 'via edinburgh', yet it still gives me the one that changes at york!
yep, it goes
via edinburgh... but doesn't change there. FFS.