Alternative is early train to Dover + ferry instead of Eurostar.
7:07 AM
St Pancras International
southeastern Dover Priory
1 hr 7 min (4 stops) · Platform 12
7:14 AM
Stratford International
7:25 AM
Ebbsfleet International
7:45 AM
Ashford International
8:14 AM
Dover Priory
8:14 AM
Dover
6am, 1hr ride to St Pancras and then 1hr train to Dover then ferry.
Then you have to sort trains out on the other side. But means no disassembly (assuming you can take bikes on southeastern Dover Priory).
7:07 AM
St Pancras International
southeastern Dover Priory
1 hr 7 min (4 stops) · Platform 12
7:14 AM
Stratford International
7:25 AM
Ebbsfleet International
7:45 AM
Ashford International
8:14 AM
Dover Priory
8:14 AM
Dover
6am, 1hr ride to St Pancras and then 1hr train to Dover then ferry.
Then you have to sort trains out on the other side. But means no disassembly (assuming you can take bikes on southeastern Dover Priory).