What do people advise/use for lights (non-Dynamo) and luggage for the Brompton?
On luggage. I prefer the Mini O Bag for daily use as it is light and has a smaller frontal area. For a larger bag, I like Carradice's Stockport and City Folder M bags, which I got in limited edition red. I also have the very old Brompton touring bag with roll-top pockets, but I find it rather front heavy when fully loaded. If you are interested in the Carradice's I would secure a frame first, as they are in short supply. Some shops have them with frames in their display models, for example.
I switched recently from a Carradice Stockport Folder to the new Brompton Metro bag. I've been really impressed by the Metro bag, no regrets. I prefer the buckles for securing the flap, and the expandable shoulder strap is handy when off the bike and you have a fully loaded bag.
On luggage. I prefer the Mini O Bag for daily use as it is light and has a smaller frontal area. For a larger bag, I like Carradice's Stockport and City Folder M bags, which I got in limited edition red. I also have the very old Brompton touring bag with roll-top pockets, but I find it rather front heavy when fully loaded. If you are interested in the Carradice's I would secure a frame first, as they are in short supply. Some shops have them with frames in their display models, for example.