Last year was my first, I thought it was great, good vibe in London, then increasingly deserted roads as you get further out and it gets later in the evening. It was particularly good weather too, not quite as warm as this year but a tailwind which will unfortunately be a headwind this year.
If you live in London I would agree cycle back to ipswich get the train from there, for me it’s the reverse though so start with a train to Liverpool st, short hop to Hackney fields, cycle to Dunwich then back to Woodbridge and home.
Very sociable riding through the night, you see just about every kind of bike and cyclist. I’m a beardy geezer on a black and red Bianchi say hello.