Hi Polarbear
You can buy ethanol in allmost all supermarkets. it is 1/2l light blue bottles marked
"
denatureret sprit".
Like Woollypigs say, you can take your bike on the train. If you use Intercity trains you'll normally need a reservation for the bike, and get one yourself too, otherwise you might have to stand up for 3 hours.
If you take normal commuter train between that stops everywhere you don't need it.
I just checked the ticketprices : £6 / bike and £31 / person.
Hope this helps, if you need any other info just pm me
Gus