as do East Coast, however Virgin Trains say "remember to book a reservation for your bike in advance.. . . CrossCountry insist on a reservation.
If you must use a website that cannot handle bike reservations, yes.I would reserve the bike space first then book the Advance ticket for the same train. Otherwise you could have the Advance but not be able to take the bike!
You are quite likely to find that the reserved seat you are obliged to use is nowhere near any cycle storage if you book them separately.When booking an advance ticket, it is possible to reserve the bicycle space at the same time as the ticket.
But if you haven't, you can also add a cycle reservation at a later date - perhaps easiest to do at a station.
Indeed.You are quite likely to find that the reserved seat you are obliged to use is nowhere near any cycle storage if you book them separately.